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    <link:label id="lab_us-gaap_IncomeStatementAbstract_657983776F203AC67FBCCCC9A97C66C4_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_657983776F203AC67FBCCCC9A97C66C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Statement [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_657983776F203AC67FBCCCC9A97C66C4" xlink:type="locator" />
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    <link:label id="lab_us-gaap_StatementTable_06CF184661602A009D4FCCC9A97C5FD1_label_en-US" xlink:label="lab_us-gaap_StatementTable_06CF184661602A009D4FCCC9A97C5FD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_06CF184661602A009D4FCCC9A97C5FD1" xlink:type="locator" />
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    <link:label id="lab_us-gaap_StatementLineItems_7AF4FA32F36965F0D214CCC9A97DC708_terseLabel_en-US" xlink:label="lab_us-gaap_StatementLineItems_7AF4FA32F36965F0D214CCC9A97DC708" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement</link:label>
    <link:label id="lab_us-gaap_StatementLineItems_7AF4FA32F36965F0D214CCC9A97DC708_label_en-US" xlink:label="lab_us-gaap_StatementLineItems_7AF4FA32F36965F0D214CCC9A97DC708" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_7AF4FA32F36965F0D214CCC9A97DC708" xlink:type="locator" />
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    <link:label id="lab_us-gaap_SalesRevenueNetAbstract_8E515C3B0897C7503A46CCC9A97E77ED_terseLabel_en-US" xlink:label="lab_us-gaap_SalesRevenueNetAbstract_8E515C3B0897C7503A46CCC9A97E77ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Revenues</link:label>
    <link:label id="lab_us-gaap_SalesRevenueNetAbstract_8E515C3B0897C7503A46CCC9A97E77ED_label_en-US" xlink:label="lab_us-gaap_SalesRevenueNetAbstract_8E515C3B0897C7503A46CCC9A97E77ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Net [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SalesRevenueNetAbstract" xlink:label="loc_us-gaap_SalesRevenueNetAbstract_8E515C3B0897C7503A46CCC9A97E77ED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SalesRevenueNetAbstract_8E515C3B0897C7503A46CCC9A97E77ED" xlink:to="lab_us-gaap_SalesRevenueNetAbstract_8E515C3B0897C7503A46CCC9A97E77ED" xlink:type="arc" />
    <link:label id="lab_us-gaap_RegulatedOperatingRevenueWater_ED395BEF44D5DD0A5310CCC9A97E27DB_verboseLabel_en-US" xlink:label="lab_us-gaap_RegulatedOperatingRevenueWater_ED395BEF44D5DD0A5310CCC9A97E27DB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Water</link:label>
    <link:label id="lab_us-gaap_RegulatedOperatingRevenueWater_ED395BEF44D5DD0A5310CCC9A97E27DB_label_en-US" xlink:label="lab_us-gaap_RegulatedOperatingRevenueWater_ED395BEF44D5DD0A5310CCC9A97E27DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulated Operating Revenue, Water</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatedOperatingRevenueWater" xlink:label="loc_us-gaap_RegulatedOperatingRevenueWater_ED395BEF44D5DD0A5310CCC9A97E27DB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RegulatedOperatingRevenueWater_ED395BEF44D5DD0A5310CCC9A97E27DB" xlink:to="lab_us-gaap_RegulatedOperatingRevenueWater_ED395BEF44D5DD0A5310CCC9A97E27DB" xlink:type="arc" />
    <link:label id="lab_us-gaap_ElectricUtilityRevenue_F1CB5D6E31BB1027DF3BCCC9A97F8380_terseLabel_en-US" xlink:label="lab_us-gaap_ElectricUtilityRevenue_F1CB5D6E31BB1027DF3BCCC9A97F8380" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Electric Revenue</link:label>
    <link:label id="lab_us-gaap_ElectricUtilityRevenue_F1CB5D6E31BB1027DF3BCCC9A97F8380_label_en-US" xlink:label="lab_us-gaap_ElectricUtilityRevenue_F1CB5D6E31BB1027DF3BCCC9A97F8380" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Electric Revenue</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ElectricUtilityRevenue" xlink:label="loc_us-gaap_ElectricUtilityRevenue_F1CB5D6E31BB1027DF3BCCC9A97F8380" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ElectricUtilityRevenue_F1CB5D6E31BB1027DF3BCCC9A97F8380" xlink:to="lab_us-gaap_ElectricUtilityRevenue_F1CB5D6E31BB1027DF3BCCC9A97F8380" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractsRevenue_EF571574A9E2E86CCF3ACCC9A97F641B_terseLabel_en-US" xlink:label="lab_us-gaap_ContractsRevenue_EF571574A9E2E86CCF3ACCC9A97F641B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contracted services</link:label>
    <link:label id="lab_us-gaap_ContractsRevenue_EF571574A9E2E86CCF3ACCC9A97F641B_label_en-US" xlink:label="lab_us-gaap_ContractsRevenue_EF571574A9E2E86CCF3ACCC9A97F641B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contracts Revenue</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ContractsRevenue" xlink:label="loc_us-gaap_ContractsRevenue_EF571574A9E2E86CCF3ACCC9A97F641B" xlink:type="locator" />
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    <link:label id="lab_us-gaap_Revenues_E3517287C16F4EE5A4D0CCC9A97F3450_label_en-US" xlink:label="lab_us-gaap_Revenues_E3517287C16F4EE5A4D0CCC9A97F3450" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenues</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_E3517287C16F4EE5A4D0CCC9A97F3450" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OperatingExpensesAbstract_C1DA58DBE81E0FC8A85CCCC9A980522D_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_C1DA58DBE81E0FC8A85CCCC9A980522D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Expenses</link:label>
    <link:label id="lab_us-gaap_OperatingExpensesAbstract_C1DA58DBE81E0FC8A85CCCC9A980522D_label_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_C1DA58DBE81E0FC8A85CCCC9A980522D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Expenses [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="loc_us-gaap_OperatingExpensesAbstract_C1DA58DBE81E0FC8A85CCCC9A980522D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingExpensesAbstract_C1DA58DBE81E0FC8A85CCCC9A980522D" xlink:to="lab_us-gaap_OperatingExpensesAbstract_C1DA58DBE81E0FC8A85CCCC9A980522D" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostOfPurchasedWater_6F77264141187A96F132CCC9A9800C17_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfPurchasedWater_6F77264141187A96F132CCC9A9800C17" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Water purchased</link:label>
    <link:label id="lab_us-gaap_CostOfPurchasedWater_6F77264141187A96F132CCC9A9800C17_label_en-US" xlink:label="lab_us-gaap_CostOfPurchasedWater_6F77264141187A96F132CCC9A9800C17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of Purchased Water</link:label>
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    <link:label id="lab_awr_PowerPurchasedForPumping_B4BD140496C8EC8C53C3CCC9A980A54A_terseLabel_en-US" xlink:label="lab_awr_PowerPurchasedForPumping_B4BD140496C8EC8C53C3CCC9A980A54A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Power purchased for pumping</link:label>
    <link:label id="lab_awr_PowerPurchasedForPumping_B4BD140496C8EC8C53C3CCC9A980A54A_label_en-US" xlink:label="lab_awr_PowerPurchasedForPumping_B4BD140496C8EC8C53C3CCC9A980A54A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Power Purchased for Pumping</link:label>
    <link:label id="lab_awr_PowerPurchasedForPumping_B4BD140496C8EC8C53C3CCC9A980A54A_documentation_en-US" xlink:label="lab_awr_PowerPurchasedForPumping_B4BD140496C8EC8C53C3CCC9A980A54A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents Power purchased for pumping expenses.</link:label>
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    <link:label id="lab_awr_GroundwaterProductionAssessment_60CF4491D290B79E21D8CCC9A9801420_terseLabel_en-US" xlink:label="lab_awr_GroundwaterProductionAssessment_60CF4491D290B79E21D8CCC9A9801420" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Groundwater production assessment</link:label>
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    <link:label id="lab_awr_GroundwaterProductionAssessment_60CF4491D290B79E21D8CCC9A9801420_documentation_en-US" xlink:label="lab_awr_GroundwaterProductionAssessment_60CF4491D290B79E21D8CCC9A9801420" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the aggregate expenses on groundwater production assessment.</link:label>
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    <link:label id="lab_us-gaap_UtilitiesOperatingExpensePurchasedPower_E56A1A18E2740F202695CCC9A9819A1A_terseLabel_en-US" xlink:label="lab_us-gaap_UtilitiesOperatingExpensePurchasedPower_E56A1A18E2740F202695CCC9A9819A1A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Utilities Operating Expense, Purchased Power</link:label>
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    <link:label id="lab_awr_SupplyCostBalancingAccounts_F430F44BAFCBF86AFC2ECCC9A98169C1_terseLabel_en-US" xlink:label="lab_awr_SupplyCostBalancingAccounts_F430F44BAFCBF86AFC2ECCC9A98169C1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supply cost balancing accounts</link:label>
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    <link:label id="lab_awr_TariffbasedRevenuesMember_EF23B948B22BFE70619BCCC9A8DC8225_label_en-US" xlink:label="lab_awr_TariffbasedRevenuesMember_EF23B948B22BFE70619BCCC9A8DC8225" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tariff-based Revenues [Member]</link:label>
    <link:label id="lab_awr_TariffbasedRevenuesMember_EF23B948B22BFE70619BCCC9A8DC8225_documentation_en-US" xlink:label="lab_awr_TariffbasedRevenuesMember_EF23B948B22BFE70619BCCC9A8DC8225" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tariff-based Revenues [Member]</link:label>
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    <link:label id="lab_awr_SurchargesCostrecoveryActivitiesMember_C1E65A7B1040E822E4DDCCC9A8DD2EB1_terseLabel_en-US" xlink:label="lab_awr_SurchargesCostrecoveryActivitiesMember_C1E65A7B1040E822E4DDCCC9A8DD2EB1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CPUC-approved surcharges (cost-recovery activities)</link:label>
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    <link:label id="lab_awr_SurchargesCostrecoveryActivitiesMember_C1E65A7B1040E822E4DDCCC9A8DD2EB1_documentation_en-US" xlink:label="lab_awr_SurchargesCostrecoveryActivitiesMember_C1E65A7B1040E822E4DDCCC9A8DD2EB1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Surcharges (Cost-recovery Activities) [Member]</link:label>
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    <link:label id="lab_awr_OtherProductsandServicesMember_70E27573EC62381F5664CCC9A8DD6FB5_documentation_en-US" xlink:label="lab_awr_OtherProductsandServicesMember_70E27573EC62381F5664CCC9A8DD6FB5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Products and Services [Member]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatedOperatingRevenueElectricNonNuclear" xlink:label="loc_us-gaap_RegulatedOperatingRevenueElectricNonNuclear_A221401ACF2421028B69CCC9A8DE132D" xlink:type="locator" />
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    <link:label id="lab_awr_ScheduleOfRegulatoryAssetsAndLiabilitiesTable_337AE68ADB7C555FEA74CCC9A8A1EFD7_terseLabel_en-US" xlink:label="lab_awr_ScheduleOfRegulatoryAssetsAndLiabilitiesTable_337AE68ADB7C555FEA74CCC9A8A1EFD7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Regulatory Assets and Liabilities [Table]</link:label>
    <link:label id="lab_awr_ScheduleOfRegulatoryAssetsAndLiabilitiesTable_337AE68ADB7C555FEA74CCC9A8A1EFD7_label_en-US" xlink:label="lab_awr_ScheduleOfRegulatoryAssetsAndLiabilitiesTable_337AE68ADB7C555FEA74CCC9A8A1EFD7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Regulatory Assets and Liabilities [Table]</link:label>
    <link:label id="lab_awr_ScheduleOfRegulatoryAssetsAndLiabilitiesTable_337AE68ADB7C555FEA74CCC9A8A1EFD7_documentation_en-US" xlink:label="lab_awr_ScheduleOfRegulatoryAssetsAndLiabilitiesTable_337AE68ADB7C555FEA74CCC9A8A1EFD7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">A table of assets and liabilities that are created when regulatory agencies permit public utilities to defer certain costs and recognition of certain revenues that are included in rate-setting to the balance sheet.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_ScheduleOfRegulatoryAssetsAndLiabilitiesTable" xlink:label="loc_awr_ScheduleOfRegulatoryAssetsAndLiabilitiesTable_337AE68ADB7C555FEA74CCC9A8A1EFD7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_ScheduleOfRegulatoryAssetsAndLiabilitiesTable_337AE68ADB7C555FEA74CCC9A8A1EFD7" xlink:to="lab_awr_ScheduleOfRegulatoryAssetsAndLiabilitiesTable_337AE68ADB7C555FEA74CCC9A8A1EFD7" xlink:type="arc" />
    <link:label id="lab_us-gaap_RegulatoryAssetAxis_E8C60C91F6EE34DDB89FCCC9A8A38ECE_terseLabel_en-US" xlink:label="lab_us-gaap_RegulatoryAssetAxis_E8C60C91F6EE34DDB89FCCC9A8A38ECE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Regulatory Asset [Axis]</link:label>
    <link:label id="lab_us-gaap_RegulatoryAssetAxis_E8C60C91F6EE34DDB89FCCC9A8A38ECE_label_en-US" xlink:label="lab_us-gaap_RegulatoryAssetAxis_E8C60C91F6EE34DDB89FCCC9A8A38ECE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Asset [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryAssetAxis" xlink:label="loc_us-gaap_RegulatoryAssetAxis_E8C60C91F6EE34DDB89FCCC9A8A38ECE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RegulatoryAssetAxis_E8C60C91F6EE34DDB89FCCC9A8A38ECE" xlink:to="lab_us-gaap_RegulatoryAssetAxis_E8C60C91F6EE34DDB89FCCC9A8A38ECE" xlink:type="arc" />
    <link:label id="lab_us-gaap_RegulatoryAssetDomain_345148A57BADC4E96EF4CCC9A8A3C97B_terseLabel_en-US" xlink:label="lab_us-gaap_RegulatoryAssetDomain_345148A57BADC4E96EF4CCC9A8A3C97B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Regulatory Asset [Domain]</link:label>
    <link:label id="lab_us-gaap_RegulatoryAssetDomain_345148A57BADC4E96EF4CCC9A8A3C97B_label_en-US" xlink:label="lab_us-gaap_RegulatoryAssetDomain_345148A57BADC4E96EF4CCC9A8A3C97B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Asset [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryAssetDomain" xlink:label="loc_us-gaap_RegulatoryAssetDomain_345148A57BADC4E96EF4CCC9A8A3C97B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RegulatoryAssetDomain_345148A57BADC4E96EF4CCC9A8A3C97B" xlink:to="lab_us-gaap_RegulatoryAssetDomain_345148A57BADC4E96EF4CCC9A8A3C97B" xlink:type="arc" />
    <link:label id="lab_awr_WaterRevenueAdjustmentMechanismMember_0A09B0ECA27AB9121A9DCCC9A8A3B6EE_terseLabel_en-US" xlink:label="lab_awr_WaterRevenueAdjustmentMechanismMember_0A09B0ECA27AB9121A9DCCC9A8A3B6EE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Water Revenue Adjustment Mechanism [Member]</link:label>
    <link:label id="lab_awr_WaterRevenueAdjustmentMechanismMember_0A09B0ECA27AB9121A9DCCC9A8A3B6EE_label_en-US" xlink:label="lab_awr_WaterRevenueAdjustmentMechanismMember_0A09B0ECA27AB9121A9DCCC9A8A3B6EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Water Revenue Adjustment Mechanism [Member]</link:label>
    <link:label id="lab_awr_WaterRevenueAdjustmentMechanismMember_0A09B0ECA27AB9121A9DCCC9A8A3B6EE_documentation_en-US" xlink:label="lab_awr_WaterRevenueAdjustmentMechanismMember_0A09B0ECA27AB9121A9DCCC9A8A3B6EE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the regulatory assets arising from water revenue adjustment mechanism.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_WaterRevenueAdjustmentMechanismMember" xlink:label="loc_awr_WaterRevenueAdjustmentMechanismMember_0A09B0ECA27AB9121A9DCCC9A8A3B6EE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_WaterRevenueAdjustmentMechanismMember_0A09B0ECA27AB9121A9DCCC9A8A3B6EE" xlink:to="lab_awr_WaterRevenueAdjustmentMechanismMember_0A09B0ECA27AB9121A9DCCC9A8A3B6EE" xlink:type="arc" />
    <link:label id="lab_awr_GeneralRateCaseMemorandumAccountsMember_4E652BF04F3BF4015A44CCC9A8A4FC23_terseLabel_en-US" xlink:label="lab_awr_GeneralRateCaseMemorandumAccountsMember_4E652BF04F3BF4015A44CCC9A8A4FC23" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">General rate case memorandum accounts</link:label>
    <link:label id="lab_awr_GeneralRateCaseMemorandumAccountsMember_4E652BF04F3BF4015A44CCC9A8A4FC23_label_en-US" xlink:label="lab_awr_GeneralRateCaseMemorandumAccountsMember_4E652BF04F3BF4015A44CCC9A8A4FC23" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">General Rate Case Memorandum Accounts [Member]</link:label>
    <link:label id="lab_awr_GeneralRateCaseMemorandumAccountsMember_4E652BF04F3BF4015A44CCC9A8A4FC23_documentation_en-US" xlink:label="lab_awr_GeneralRateCaseMemorandumAccountsMember_4E652BF04F3BF4015A44CCC9A8A4FC23" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Discloses the amount of regulatory assets and liabilities pertaining to the general rate case memorandum accounts.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_GeneralRateCaseMemorandumAccountsMember" xlink:label="loc_awr_GeneralRateCaseMemorandumAccountsMember_4E652BF04F3BF4015A44CCC9A8A4FC23" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_GeneralRateCaseMemorandumAccountsMember_4E652BF04F3BF4015A44CCC9A8A4FC23" xlink:to="lab_awr_GeneralRateCaseMemorandumAccountsMember_4E652BF04F3BF4015A44CCC9A8A4FC23" xlink:type="arc" />
    <link:label id="lab_awr_RegulatoryAssetsAndLiabilitiesLineItems_A5E37D1C300D2FFB1A1FCCC9A8A428C8_terseLabel_en-US" xlink:label="lab_awr_RegulatoryAssetsAndLiabilitiesLineItems_A5E37D1C300D2FFB1A1FCCC9A8A428C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Regulatory matters:</link:label>
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    <link:label id="lab_awr_RegulatoryAssetsAndLiabilitiesLineItems_A5E37D1C300D2FFB1A1FCCC9A8A428C8_documentation_en-US" xlink:label="lab_awr_RegulatoryAssetsAndLiabilitiesLineItems_A5E37D1C300D2FFB1A1FCCC9A8A428C8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_RegulatoryAssetsAndLiabilitiesLineItems" xlink:label="loc_awr_RegulatoryAssetsAndLiabilitiesLineItems_A5E37D1C300D2FFB1A1FCCC9A8A428C8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_RegulatoryAssetsAndLiabilitiesLineItems_A5E37D1C300D2FFB1A1FCCC9A8A428C8" xlink:to="lab_awr_RegulatoryAssetsAndLiabilitiesLineItems_A5E37D1C300D2FFB1A1FCCC9A8A428C8" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetRegulatoryAssets_FF0D6D8372D6B903FCC8CCC9A8A573C3_terseLabel_en-US" xlink:label="lab_us-gaap_NetRegulatoryAssets_FF0D6D8372D6B903FCC8CCC9A8A573C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Regulatory Assets</link:label>
    <link:label id="lab_us-gaap_NetRegulatoryAssets_FF0D6D8372D6B903FCC8CCC9A8A573C3_label_en-US" xlink:label="lab_us-gaap_NetRegulatoryAssets_FF0D6D8372D6B903FCC8CCC9A8A573C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Regulatory Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetRegulatoryAssets" xlink:label="loc_us-gaap_NetRegulatoryAssets_FF0D6D8372D6B903FCC8CCC9A8A573C3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetRegulatoryAssets_FF0D6D8372D6B903FCC8CCC9A8A573C3" xlink:to="lab_us-gaap_NetRegulatoryAssets_FF0D6D8372D6B903FCC8CCC9A8A573C3" xlink:type="arc" />
    <link:label id="lab_awr_RegulatoryAssetRecoveryPeriods_9C81EBE469718FD51940CCC9A8A5A719_terseLabel_en-US" xlink:label="lab_awr_RegulatoryAssetRecoveryPeriods_9C81EBE469718FD51940CCC9A8A5A719" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Regulatory Asset Recovery Periods</link:label>
    <link:label id="lab_awr_RegulatoryAssetRecoveryPeriods_9C81EBE469718FD51940CCC9A8A5A719_label_en-US" xlink:label="lab_awr_RegulatoryAssetRecoveryPeriods_9C81EBE469718FD51940CCC9A8A5A719" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Asset Recovery Periods</link:label>
    <link:label id="lab_awr_RegulatoryAssetRecoveryPeriods_9C81EBE469718FD51940CCC9A8A5A719_documentation_en-US" xlink:label="lab_awr_RegulatoryAssetRecoveryPeriods_9C81EBE469718FD51940CCC9A8A5A719" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the recovery periods of the surcharge billed to the customers.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_RegulatoryAssetRecoveryPeriods" xlink:label="loc_awr_RegulatoryAssetRecoveryPeriods_9C81EBE469718FD51940CCC9A8A5A719" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_RegulatoryAssetRecoveryPeriods_9C81EBE469718FD51940CCC9A8A5A719" xlink:to="lab_awr_RegulatoryAssetRecoveryPeriods_9C81EBE469718FD51940CCC9A8A5A719" xlink:type="arc" />
    <link:label id="lab_us-gaap_CompensationAndRetirementDisclosureAbstract_81F20E12FA0D883167EBCCC9A7A459E4_label_en-US" xlink:label="lab_us-gaap_CompensationAndRetirementDisclosureAbstract_81F20E12FA0D883167EBCCC9A7A459E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retirement Benefits [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_81F20E12FA0D883167EBCCC9A7A459E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_81F20E12FA0D883167EBCCC9A7A459E4" xlink:to="lab_us-gaap_CompensationAndRetirementDisclosureAbstract_81F20E12FA0D883167EBCCC9A7A459E4" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4C765B54D05DD741BF3ACCC9A7A58B1D_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4C765B54D05DD741BF3ACCC9A7A58B1D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Defined Benefit Plans Disclosures [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4C765B54D05DD741BF3ACCC9A7A58B1D_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4C765B54D05DD741BF3ACCC9A7A58B1D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Defined Benefit Plans Disclosures [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4C765B54D05DD741BF3ACCC9A7A58B1D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RetirementPlanTypeAxis_8E0B65D00A7765D4D7D0CCC9A7A5ED51_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeAxis_8E0B65D00A7765D4D7D0CCC9A7A5ED51" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retirement Plan Type [Axis]</link:label>
    <link:label id="lab_us-gaap_RetirementPlanTypeAxis_8E0B65D00A7765D4D7D0CCC9A7A5ED51_label_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeAxis_8E0B65D00A7765D4D7D0CCC9A7A5ED51" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retirement Plan Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_8E0B65D00A7765D4D7D0CCC9A7A5ED51" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_8E0B65D00A7765D4D7D0CCC9A7A5ED51" xlink:to="lab_us-gaap_RetirementPlanTypeAxis_8E0B65D00A7765D4D7D0CCC9A7A5ED51" xlink:type="arc" />
    <link:label id="lab_us-gaap_RetirementPlanTypeDomain_49617D0EAAEB9E26F14FCCC9A7A5829F_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeDomain_49617D0EAAEB9E26F14FCCC9A7A5829F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retirement Plan Type [Domain]</link:label>
    <link:label id="lab_us-gaap_RetirementPlanTypeDomain_49617D0EAAEB9E26F14FCCC9A7A5829F_label_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeDomain_49617D0EAAEB9E26F14FCCC9A7A5829F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retirement Plan Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_49617D0EAAEB9E26F14FCCC9A7A5829F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_49617D0EAAEB9E26F14FCCC9A7A5829F" xlink:to="lab_us-gaap_RetirementPlanTypeDomain_49617D0EAAEB9E26F14FCCC9A7A5829F" xlink:type="arc" />
    <link:label id="lab_us-gaap_PensionPlansDefinedBenefitMember_7E3E529961650EF5FC11CCC9A7A6A0E6_verboseLabel_en-US" xlink:label="lab_us-gaap_PensionPlansDefinedBenefitMember_7E3E529961650EF5FC11CCC9A7A6A0E6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Pension Benefits</link:label>
    <link:label id="lab_us-gaap_PensionPlansDefinedBenefitMember_7E3E529961650EF5FC11CCC9A7A6A0E6_label_en-US" xlink:label="lab_us-gaap_PensionPlansDefinedBenefitMember_7E3E529961650EF5FC11CCC9A7A6A0E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pension Plan [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_7E3E529961650EF5FC11CCC9A7A6A0E6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionPlansDefinedBenefitMember_7E3E529961650EF5FC11CCC9A7A6A0E6" xlink:to="lab_us-gaap_PensionPlansDefinedBenefitMember_7E3E529961650EF5FC11CCC9A7A6A0E6" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_D8FA02B2A7185AB623FCCCC9A7A6F1EF_terseLabel_en-US" xlink:label="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_D8FA02B2A7185AB623FCCCC9A7A6F1EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Postretirement Benefits</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:label="loc_us-gaap_LongTermDebtFairValue_A04288003BA5ACFA8A98CCC9A7FB142D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtFairValue_A04288003BA5ACFA8A98CCC9A7FB142D" xlink:to="lab_us-gaap_LongTermDebtFairValue_A04288003BA5ACFA8A98CCC9A7FB142D" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingDisclosureTextBlock_DD1D349CD4E9777CB902CCC9A741421E_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingDisclosureTextBlock_DD1D349CD4E9777CB902CCC9A741421E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Segments</link:label>
    <link:label id="lab_us-gaap_SegmentReportingDisclosureTextBlock_DD1D349CD4E9777CB902CCC9A741421E_label_en-US" xlink:label="lab_us-gaap_SegmentReportingDisclosureTextBlock_DD1D349CD4E9777CB902CCC9A741421E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:label="loc_us-gaap_SegmentReportingDisclosureTextBlock_DD1D349CD4E9777CB902CCC9A741421E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingDisclosureTextBlock_DD1D349CD4E9777CB902CCC9A741421E" xlink:to="lab_us-gaap_SegmentReportingDisclosureTextBlock_DD1D349CD4E9777CB902CCC9A741421E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_9ACF5D5AFDDCEFFC387DCCC9A7B844FF_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_9ACF5D5AFDDCEFFC387DCCC9A7B844FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of components of net periodic benefit costs, before allocation to the overhead pool, for Registrant's pension plan, postretirement plan, and SERP</link:label>
    <link:label id="lab_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_9ACF5D5AFDDCEFFC387DCCC9A7B844FF_label_en-US" xlink:label="lab_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_9ACF5D5AFDDCEFFC387DCCC9A7B844FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Net Benefit Costs [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfNetBenefitCostsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_9ACF5D5AFDDCEFFC387DCCC9A7B844FF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_9ACF5D5AFDDCEFFC387DCCC9A7B844FF" xlink:to="lab_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_9ACF5D5AFDDCEFFC387DCCC9A7B844FF" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfFinancialPositionAbstract_CC89BE465FD2DD1272B9CCC9A9A65DBE_label_en-US" xlink:label="lab_us-gaap_StatementOfFinancialPositionAbstract_CC89BE465FD2DD1272B9CCC9A9A65DBE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Financial Position [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_CC89BE465FD2DD1272B9CCC9A9A65DBE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_CC89BE465FD2DD1272B9CCC9A9A65DBE" xlink:to="lab_us-gaap_StatementOfFinancialPositionAbstract_CC89BE465FD2DD1272B9CCC9A9A65DBE" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsAbstract_F88AAA6191229674D717CCC9A9A83292_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract_F88AAA6191229674D717CCC9A9A83292" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASSETS</link:label>
    <link:label id="lab_us-gaap_AssetsAbstract_F88AAA6191229674D717CCC9A9A83292_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract_F88AAA6191229674D717CCC9A9A83292" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_F88AAA6191229674D717CCC9A9A83292" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsAbstract_F88AAA6191229674D717CCC9A9A83292" xlink:to="lab_us-gaap_AssetsAbstract_F88AAA6191229674D717CCC9A9A83292" xlink:type="arc" />
    <link:label id="lab_awr_UtilitiesPropertyPlantAndEquipmentGrossAbstract_DB3DDC8D9A77182A334ECCC9A9A85059_terseLabel_en-US" xlink:label="lab_awr_UtilitiesPropertyPlantAndEquipmentGrossAbstract_DB3DDC8D9A77182A334ECCC9A9A85059" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment</link:label>
    <link:label id="lab_awr_UtilitiesPropertyPlantAndEquipmentGrossAbstract_DB3DDC8D9A77182A334ECCC9A9A85059_label_en-US" xlink:label="lab_awr_UtilitiesPropertyPlantAndEquipmentGrossAbstract_DB3DDC8D9A77182A334ECCC9A9A85059" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Utilities Property Plant and Equipment Gross [Abstract]</link:label>
    <link:label id="lab_awr_UtilitiesPropertyPlantAndEquipmentGrossAbstract_DB3DDC8D9A77182A334ECCC9A9A85059_documentation_en-US" xlink:label="lab_awr_UtilitiesPropertyPlantAndEquipmentGrossAbstract_DB3DDC8D9A77182A334ECCC9A9A85059" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_UtilitiesPropertyPlantAndEquipmentGrossAbstract" xlink:label="loc_awr_UtilitiesPropertyPlantAndEquipmentGrossAbstract_DB3DDC8D9A77182A334ECCC9A9A85059" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_UtilitiesPropertyPlantAndEquipmentGrossAbstract_DB3DDC8D9A77182A334ECCC9A9A85059" xlink:to="lab_awr_UtilitiesPropertyPlantAndEquipmentGrossAbstract_DB3DDC8D9A77182A334ECCC9A9A85059" xlink:type="arc" />
    <link:label id="lab_awr_UtilitiesPropertyPlantAndEquipmentGross_7F43FAB262576BD548F1CCC9A9A80B1B_terseLabel_en-US" xlink:label="lab_awr_UtilitiesPropertyPlantAndEquipmentGross_7F43FAB262576BD548F1CCC9A9A80B1B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Regulated utility plant, at cost</link:label>
    <link:label id="lab_awr_UtilitiesPropertyPlantAndEquipmentGross_7F43FAB262576BD548F1CCC9A9A80B1B_label_en-US" xlink:label="lab_awr_UtilitiesPropertyPlantAndEquipmentGross_7F43FAB262576BD548F1CCC9A9A80B1B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Utilities Property Plant and Equipment, Gross</link:label>
    <link:label id="lab_awr_UtilitiesPropertyPlantAndEquipmentGross_7F43FAB262576BD548F1CCC9A9A80B1B_documentation_en-US" xlink:label="lab_awr_UtilitiesPropertyPlantAndEquipmentGross_7F43FAB262576BD548F1CCC9A9A80B1B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale owned by a utility entity used in the operations of the entity.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_UtilitiesPropertyPlantAndEquipmentGross" xlink:label="loc_awr_UtilitiesPropertyPlantAndEquipmentGross_7F43FAB262576BD548F1CCC9A9A80B1B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_UtilitiesPropertyPlantAndEquipmentGross_7F43FAB262576BD548F1CCC9A9A80B1B" xlink:to="lab_awr_UtilitiesPropertyPlantAndEquipmentGross_7F43FAB262576BD548F1CCC9A9A80B1B" xlink:type="arc" />
    <link:label id="lab_awr_NonUtilitiesPropertyPlantAndEquipmentGross_55E8651B6DD349B5A78FCCC9A9A987DB_terseLabel_en-US" xlink:label="lab_awr_NonUtilitiesPropertyPlantAndEquipmentGross_55E8651B6DD349B5A78FCCC9A9A987DB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-utility property, at cost</link:label>
    <link:label id="lab_awr_NonUtilitiesPropertyPlantAndEquipmentGross_55E8651B6DD349B5A78FCCC9A9A987DB_label_en-US" xlink:label="lab_awr_NonUtilitiesPropertyPlantAndEquipmentGross_55E8651B6DD349B5A78FCCC9A9A987DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non Utilities Property Plant and Equipment, Gross</link:label>
    <link:label id="lab_awr_NonUtilitiesPropertyPlantAndEquipmentGross_55E8651B6DD349B5A78FCCC9A9A987DB_documentation_en-US" xlink:label="lab_awr_NonUtilitiesPropertyPlantAndEquipmentGross_55E8651B6DD349B5A78FCCC9A9A987DB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the gross amount, at the balance sheet date, of non utility property assets used in the normal conduct of business and not intended for resale owned by a utility entity.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_NonUtilitiesPropertyPlantAndEquipmentGross" xlink:label="loc_awr_NonUtilitiesPropertyPlantAndEquipmentGross_55E8651B6DD349B5A78FCCC9A9A987DB" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_BEE2C43E4F2020C5BAC1CCC9A9A99C82_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_BEE2C43E4F2020C5BAC1CCC9A9A99C82" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Utility plant, at cost</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_BEE2C43E4F2020C5BAC1CCC9A9A99C82_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_BEE2C43E4F2020C5BAC1CCC9A9A99C82" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_BEE2C43E4F2020C5BAC1CCC9A9A99C82" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_BEE2C43E4F2020C5BAC1CCC9A9A99C82" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentGross_BEE2C43E4F2020C5BAC1CCC9A9A99C82" xlink:type="arc" />
    <link:label id="lab_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_BEE1E1993C60DB5263F4CCC9A9A9FFA8_negatedLabel_en-US" xlink:label="lab_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_BEE1E1993C60DB5263F4CCC9A9A9FFA8" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less - Accumulated depreciation</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_BEE1E1993C60DB5263F4CCC9A9A9FFA8" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_5E3C6533C84E795C3547CCC9A9AA2D48_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_5E3C6533C84E795C3547CCC9A9AA2D48" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net property, plant and equipment</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_5E3C6533C84E795C3547CCC9A9AA2D48_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_5E3C6533C84E795C3547CCC9A9AA2D48" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_5E3C6533C84E795C3547CCC9A9AA2D48" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentOtherNetAbstract_E42BED4E221C6868F414CCC9A9AAABCF_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentOtherNetAbstract_E42BED4E221C6868F414CCC9A9AAABCF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Property and Investments</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentOtherNetAbstract" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentOtherNetAbstract_E42BED4E221C6868F414CCC9A9AAABCF" xlink:type="locator" />
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    <link:label id="lab_us-gaap_Goodwill_1BBE53A72FFEA36392F0CCC9A9AA0182_terseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_1BBE53A72FFEA36392F0CCC9A9AA0182" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
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    <link:label id="lab_awr_PropertyPlantAndEquipmentAndInvestmentsOtherNet_722B0787745CA60A8201CCC9A9AAF102_terseLabel_en-US" xlink:label="lab_awr_PropertyPlantAndEquipmentAndInvestmentsOtherNet_722B0787745CA60A8201CCC9A9AAF102" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other property and investments</link:label>
    <link:label id="lab_awr_PropertyPlantAndEquipmentAndInvestmentsOtherNet_722B0787745CA60A8201CCC9A9AAF102_label_en-US" xlink:label="lab_awr_PropertyPlantAndEquipmentAndInvestmentsOtherNet_722B0787745CA60A8201CCC9A9AAF102" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property Plant and Equipment and Investments Other Net</link:label>
    <link:label id="lab_awr_PropertyPlantAndEquipmentAndInvestmentsOtherNet_722B0787745CA60A8201CCC9A9AAF102_documentation_en-US" xlink:label="lab_awr_PropertyPlantAndEquipmentAndInvestmentsOtherNet_722B0787745CA60A8201CCC9A9AAF102" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents capitalized assets classified as property, plant and equipment and other noncurrent investments not otherwise defined in the taxonomy.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_PropertyPlantAndEquipmentAndInvestmentsOtherNet" xlink:label="loc_awr_PropertyPlantAndEquipmentAndInvestmentsOtherNet_722B0787745CA60A8201CCC9A9AAF102" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_PropertyPlantAndEquipmentAndInvestmentsOtherNet_722B0787745CA60A8201CCC9A9AAF102" xlink:to="lab_awr_PropertyPlantAndEquipmentAndInvestmentsOtherNet_722B0787745CA60A8201CCC9A9AAF102" xlink:type="arc" />
    <link:label id="lab_awr_PropertyPlantAndEquipmentAndInvestmentsOtherAndGoodwillNet_5E5481F4CCA04BB4C6DCCCC9A9ABAC2E_totalLabel_en-US" xlink:label="lab_awr_PropertyPlantAndEquipmentAndInvestmentsOtherAndGoodwillNet_5E5481F4CCA04BB4C6DCCCC9A9ABAC2E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other property and investments</link:label>
    <link:label id="lab_awr_PropertyPlantAndEquipmentAndInvestmentsOtherAndGoodwillNet_5E5481F4CCA04BB4C6DCCCC9A9ABAC2E_label_en-US" xlink:label="lab_awr_PropertyPlantAndEquipmentAndInvestmentsOtherAndGoodwillNet_5E5481F4CCA04BB4C6DCCCC9A9ABAC2E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property Plant and Equipment and Investments Other and Goodwill Net</link:label>
    <link:label id="lab_awr_PropertyPlantAndEquipmentAndInvestmentsOtherAndGoodwillNet_5E5481F4CCA04BB4C6DCCCC9A9ABAC2E_documentation_en-US" xlink:label="lab_awr_PropertyPlantAndEquipmentAndInvestmentsOtherAndGoodwillNet_5E5481F4CCA04BB4C6DCCCC9A9ABAC2E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents aggregate amount of capitalized assets classified as property, plant and equipment and other noncurrent investments not otherwise defined in the taxonomy, and also include goodwill, as of the balance sheet date.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_PropertyPlantAndEquipmentAndInvestmentsOtherAndGoodwillNet" xlink:label="loc_awr_PropertyPlantAndEquipmentAndInvestmentsOtherAndGoodwillNet_5E5481F4CCA04BB4C6DCCCC9A9ABAC2E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_PropertyPlantAndEquipmentAndInvestmentsOtherAndGoodwillNet_5E5481F4CCA04BB4C6DCCCC9A9ABAC2E" xlink:to="lab_awr_PropertyPlantAndEquipmentAndInvestmentsOtherAndGoodwillNet_5E5481F4CCA04BB4C6DCCCC9A9ABAC2E" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsCurrentAbstract_7917982CA9CA425972E9CCC9A9ABED28_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_7917982CA9CA425972E9CCC9A9ABED28" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current Assets</link:label>
    <link:label id="lab_us-gaap_AssetsCurrentAbstract_7917982CA9CA425972E9CCC9A9ABED28_label_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_7917982CA9CA425972E9CCC9A9ABED28" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Current [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_7917982CA9CA425972E9CCC9A9ABED28" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrentAbstract_7917982CA9CA425972E9CCC9A9ABED28" xlink:to="lab_us-gaap_AssetsCurrentAbstract_7917982CA9CA425972E9CCC9A9ABED28" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_30F907C64BF603BA3C3ECCC9A9ABF895_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_30F907C64BF603BA3C3ECCC9A9ABF895" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_30F907C64BF603BA3C3ECCC9A9ABF895_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_30F907C64BF603BA3C3ECCC9A9ABF895" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, at Carrying Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_30F907C64BF603BA3C3ECCC9A9ABF895" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_30F907C64BF603BA3C3ECCC9A9ABF895" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_30F907C64BF603BA3C3ECCC9A9ABF895" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_D9DB34B7C2A5C73C0A65CCC9A9AB38EB_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_D9DB34B7C2A5C73C0A65CCC9A9AB38EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable - customers, less allowance for doubtful accounts</link:label>
    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_D9DB34B7C2A5C73C0A65CCC9A9AB38EB_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_D9DB34B7C2A5C73C0A65CCC9A9AB38EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Receivable, Net, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_D9DB34B7C2A5C73C0A65CCC9A9AB38EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_D9DB34B7C2A5C73C0A65CCC9A9AB38EB" xlink:to="lab_us-gaap_AccountsReceivableNetCurrent_D9DB34B7C2A5C73C0A65CCC9A9AB38EB" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnbilledReceivablesCurrent_A31682807C98174C9083CCC9A9AC558D_terseLabel_en-US" xlink:label="lab_us-gaap_UnbilledReceivablesCurrent_A31682807C98174C9083CCC9A9AC558D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unbilled receivable</link:label>
    <link:label id="lab_us-gaap_UnbilledReceivablesCurrent_A31682807C98174C9083CCC9A9AC558D_label_en-US" xlink:label="lab_us-gaap_UnbilledReceivablesCurrent_A31682807C98174C9083CCC9A9AC558D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unbilled Receivables, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnbilledReceivablesCurrent" xlink:label="loc_us-gaap_UnbilledReceivablesCurrent_A31682807C98174C9083CCC9A9AC558D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnbilledReceivablesCurrent_A31682807C98174C9083CCC9A9AC558D" xlink:to="lab_us-gaap_UnbilledReceivablesCurrent_A31682807C98174C9083CCC9A9AC558D" xlink:type="arc" />
    <link:label id="lab_awr_AccountsReceivableFromUSGovernmentNetCurrent_7FA90239B2A72309DB15CCC9A9ACC1F2_terseLabel_en-US" xlink:label="lab_awr_AccountsReceivableFromUSGovernmentNetCurrent_7FA90239B2A72309DB15CCC9A9ACC1F2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receivable from the U.S. government</link:label>
    <link:label id="lab_awr_AccountsReceivableFromUSGovernmentNetCurrent_7FA90239B2A72309DB15CCC9A9ACC1F2_label_en-US" xlink:label="lab_awr_AccountsReceivableFromUSGovernmentNetCurrent_7FA90239B2A72309DB15CCC9A9ACC1F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Receivable from U S Government Net, Current</link:label>
    <link:label id="lab_awr_AccountsReceivableFromUSGovernmentNetCurrent_7FA90239B2A72309DB15CCC9A9ACC1F2_documentation_en-US" xlink:label="lab_awr_AccountsReceivableFromUSGovernmentNetCurrent_7FA90239B2A72309DB15CCC9A9ACC1F2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the amount, at the balance sheet date, current portion of receivables that are derived from government contracts.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_AccountsReceivableFromUSGovernmentNetCurrent" xlink:label="loc_awr_AccountsReceivableFromUSGovernmentNetCurrent_7FA90239B2A72309DB15CCC9A9ACC1F2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_AccountsReceivableFromUSGovernmentNetCurrent_7FA90239B2A72309DB15CCC9A9ACC1F2" xlink:to="lab_awr_AccountsReceivableFromUSGovernmentNetCurrent_7FA90239B2A72309DB15CCC9A9ACC1F2" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsAndOtherReceivablesNetCurrent_A8A54567BB01F4DED5E0CCC9A9AC2646_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsAndOtherReceivablesNetCurrent_A8A54567BB01F4DED5E0CCC9A9AC2646" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other accounts receivable, less allowance for doubtful accounts</link:label>
    <link:label id="lab_us-gaap_AccountsAndOtherReceivablesNetCurrent_A8A54567BB01F4DED5E0CCC9A9AC2646_label_en-US" xlink:label="lab_us-gaap_AccountsAndOtherReceivablesNetCurrent_A8A54567BB01F4DED5E0CCC9A9AC2646" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts and Other Receivables, Net, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsAndOtherReceivablesNetCurrent" xlink:label="loc_us-gaap_AccountsAndOtherReceivablesNetCurrent_A8A54567BB01F4DED5E0CCC9A9AC2646" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsAndOtherReceivablesNetCurrent_A8A54567BB01F4DED5E0CCC9A9AC2646" xlink:to="lab_us-gaap_AccountsAndOtherReceivablesNetCurrent_A8A54567BB01F4DED5E0CCC9A9AC2646" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxesReceivable_A7ACA3D267BB83A3F7ADCCC9A9AC99F6_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxesReceivable_A7ACA3D267BB83A3F7ADCCC9A9AC99F6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income taxes receivable</link:label>
    <link:label id="lab_us-gaap_IncomeTaxesReceivable_A7ACA3D267BB83A3F7ADCCC9A9AC99F6_label_en-US" xlink:label="lab_us-gaap_IncomeTaxesReceivable_A7ACA3D267BB83A3F7ADCCC9A9AC99F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Taxes Receivable, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxesReceivable" xlink:label="loc_us-gaap_IncomeTaxesReceivable_A7ACA3D267BB83A3F7ADCCC9A9AC99F6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxesReceivable_A7ACA3D267BB83A3F7ADCCC9A9AC99F6" xlink:to="lab_us-gaap_IncomeTaxesReceivable_A7ACA3D267BB83A3F7ADCCC9A9AC99F6" xlink:type="arc" />
    <link:label id="lab_awr_DueFromRelatedPartiesIncomeTaxesCurrent_8158B33325804D027A7CCCC9A9AC63B3_terseLabel_en-US" xlink:label="lab_awr_DueFromRelatedPartiesIncomeTaxesCurrent_8158B33325804D027A7CCCC9A9AC63B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income taxes receivable from Parent</link:label>
    <link:label id="lab_awr_DueFromRelatedPartiesIncomeTaxesCurrent_8158B33325804D027A7CCCC9A9AC63B3_label_en-US" xlink:label="lab_awr_DueFromRelatedPartiesIncomeTaxesCurrent_8158B33325804D027A7CCCC9A9AC63B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Due from Related Parties, Income Taxes, Current</link:label>
    <link:label id="lab_awr_DueFromRelatedPartiesIncomeTaxesCurrent_8158B33325804D027A7CCCC9A9AC63B3_documentation_en-US" xlink:label="lab_awr_DueFromRelatedPartiesIncomeTaxesCurrent_8158B33325804D027A7CCCC9A9AC63B3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of aggregate amount of current tax-related receivables to be collected from related parties where one party can exercise control or significant influence over another party, which are usually due within one year (or one business cycle).</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_DueFromRelatedPartiesIncomeTaxesCurrent" xlink:label="loc_awr_DueFromRelatedPartiesIncomeTaxesCurrent_8158B33325804D027A7CCCC9A9AC63B3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_DueFromRelatedPartiesIncomeTaxesCurrent_8158B33325804D027A7CCCC9A9AC63B3" xlink:to="lab_awr_DueFromRelatedPartiesIncomeTaxesCurrent_8158B33325804D027A7CCCC9A9AC63B3" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryRawMaterialsAndSupplies_43B3FA46C345B52EBE40CCC9A9AC49BA_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryRawMaterialsAndSupplies_43B3FA46C345B52EBE40CCC9A9AC49BA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Materials and supplies, at average cost</link:label>
    <link:label id="lab_us-gaap_InventoryRawMaterialsAndSupplies_43B3FA46C345B52EBE40CCC9A9AC49BA_label_en-US" xlink:label="lab_us-gaap_InventoryRawMaterialsAndSupplies_43B3FA46C345B52EBE40CCC9A9AC49BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Raw Materials and Supplies, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InventoryRawMaterialsAndSupplies" xlink:label="loc_us-gaap_InventoryRawMaterialsAndSupplies_43B3FA46C345B52EBE40CCC9A9AC49BA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryRawMaterialsAndSupplies_43B3FA46C345B52EBE40CCC9A9AC49BA" xlink:to="lab_us-gaap_InventoryRawMaterialsAndSupplies_43B3FA46C345B52EBE40CCC9A9AC49BA" xlink:type="arc" />
    <link:label id="lab_us-gaap_RegulatoryAssetsCurrent_CD955F08D34C7B276469CCC9A9AD94B8_terseLabel_en-US" xlink:label="lab_us-gaap_RegulatoryAssetsCurrent_CD955F08D34C7B276469CCC9A9AD94B8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Regulatory assets &#8212; current</link:label>
    <link:label id="lab_us-gaap_RegulatoryAssetsCurrent_CD955F08D34C7B276469CCC9A9AD94B8_label_en-US" xlink:label="lab_us-gaap_RegulatoryAssetsCurrent_CD955F08D34C7B276469CCC9A9AD94B8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Assets, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryAssetsCurrent" xlink:label="loc_us-gaap_RegulatoryAssetsCurrent_CD955F08D34C7B276469CCC9A9AD94B8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RegulatoryAssetsCurrent_CD955F08D34C7B276469CCC9A9AD94B8" xlink:to="lab_us-gaap_RegulatoryAssetsCurrent_CD955F08D34C7B276469CCC9A9AD94B8" xlink:type="arc" />
    <link:label id="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_AFB39204FB9BC8A77EA3CCC9A9ADEBA1_terseLabel_en-US" xlink:label="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_AFB39204FB9BC8A77EA3CCC9A9ADEBA1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Prepayments and other current assets</link:label>
    <link:label id="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_AFB39204FB9BC8A77EA3CCC9A9ADEBA1_label_en-US" xlink:label="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_AFB39204FB9BC8A77EA3CCC9A9ADEBA1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prepaid Expense and Other Assets, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_AFB39204FB9BC8A77EA3CCC9A9ADEBA1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_AFB39204FB9BC8A77EA3CCC9A9ADEBA1" xlink:to="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_AFB39204FB9BC8A77EA3CCC9A9ADEBA1" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerAssetGrossCurrent_43CD5E03A5EAD9B83BF3CCC9A9ADFD64_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetGrossCurrent_43CD5E03A5EAD9B83BF3CCC9A9ADFD64" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract with Customer, Asset, Gross, Current</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerAssetGrossCurrent_43CD5E03A5EAD9B83BF3CCC9A9ADFD64_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetGrossCurrent_43CD5E03A5EAD9B83BF3CCC9A9ADFD64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Asset, Gross, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ContractWithCustomerAssetGrossCurrent" xlink:label="loc_us-gaap_ContractWithCustomerAssetGrossCurrent_43CD5E03A5EAD9B83BF3CCC9A9ADFD64" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerAssetGrossCurrent_43CD5E03A5EAD9B83BF3CCC9A9ADFD64" xlink:to="lab_us-gaap_ContractWithCustomerAssetGrossCurrent_43CD5E03A5EAD9B83BF3CCC9A9ADFD64" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_FFA475FCDC733EC3E2FBCCC9A9AD623C_terseLabel_en-US" xlink:label="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_FFA475FCDC733EC3E2FBCCC9A9AD623C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Costs and estimated earnings in excess of billings on contracts (Note 2)</link:label>
    <link:label id="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_FFA475FCDC733EC3E2FBCCC9A9AD623C_label_en-US" xlink:label="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_FFA475FCDC733EC3E2FBCCC9A9AD623C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Costs in Excess of Billings, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear" xlink:label="loc_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_FFA475FCDC733EC3E2FBCCC9A9AD623C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_FFA475FCDC733EC3E2FBCCC9A9AD623C" xlink:to="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_FFA475FCDC733EC3E2FBCCC9A9AD623C" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsCurrent_49E32D8A524835833F44CCC9A9AD115D_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_49E32D8A524835833F44CCC9A9AD115D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current assets</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrent_49E32D8A524835833F44CCC9A9AD115D" xlink:to="lab_us-gaap_AssetsCurrent_49E32D8A524835833F44CCC9A9AD115D" xlink:type="arc" />
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_RegulatoryAndOtherAssetsAbstract_B74B0EC7567DD87773F5CCC9A9AE0B0B" xlink:to="lab_awr_RegulatoryAndOtherAssetsAbstract_B74B0EC7567DD87773F5CCC9A9AE0B0B" xlink:type="arc" />
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    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_23BD0A1E5C7586338968CCC9A9AF679D_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_23BD0A1E5C7586338968CCC9A9AF679D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_23BD0A1E5C7586338968CCC9A9AF679D_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_23BD0A1E5C7586338968CCC9A9AF679D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_23BD0A1E5C7586338968CCC9A9AF679D" xlink:type="locator" />
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    <link:label id="lab_awr_RegulatoryAndOtherAssets_A30DBA4D8A0C99BADB5CCCC9A9AF58CF_totalLabel_en-US" xlink:label="lab_awr_RegulatoryAndOtherAssets_A30DBA4D8A0C99BADB5CCCC9A9AF58CF" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total regulatory and other assets</link:label>
    <link:label id="lab_awr_RegulatoryAndOtherAssets_A30DBA4D8A0C99BADB5CCCC9A9AF58CF_label_en-US" xlink:label="lab_awr_RegulatoryAndOtherAssets_A30DBA4D8A0C99BADB5CCCC9A9AF58CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory and Other Assets</link:label>
    <link:label id="lab_awr_RegulatoryAndOtherAssets_A30DBA4D8A0C99BADB5CCCC9A9AF58CF_documentation_en-US" xlink:label="lab_awr_RegulatoryAndOtherAssets_A30DBA4D8A0C99BADB5CCCC9A9AF58CF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents aggregate carrying amount, at the balance sheet date, of noncurrent regulatory assets held by public utility entities and other noncurrent assets not separately disclosed in the balance sheet.</link:label>
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    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_4490BE18AEADCCE02789CCC9A9AFB4C9_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_4490BE18AEADCCE02789CCC9A9AFB4C9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CAPITALIZATION AND LIABILITIES</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_4490BE18AEADCCE02789CCC9A9AFB4C9_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_4490BE18AEADCCE02789CCC9A9AFB4C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities and Equity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_4490BE18AEADCCE02789CCC9A9AFB4C9" xlink:type="locator" />
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    <link:label id="lab_us-gaap_CapitalizationLongtermDebtAndEquityAbstract_CCC9FADCC22A0D3A6627CCC9A9AF3D4E_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalizationLongtermDebtAndEquityAbstract_CCC9FADCC22A0D3A6627CCC9A9AF3D4E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capitalization</link:label>
    <link:label id="lab_us-gaap_CapitalizationLongtermDebtAndEquityAbstract_CCC9FADCC22A0D3A6627CCC9A9AF3D4E_label_en-US" xlink:label="lab_us-gaap_CapitalizationLongtermDebtAndEquityAbstract_CCC9FADCC22A0D3A6627CCC9A9AF3D4E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capitalization, Long-term Debt and Equity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CapitalizationLongtermDebtAndEquityAbstract" xlink:label="loc_us-gaap_CapitalizationLongtermDebtAndEquityAbstract_CCC9FADCC22A0D3A6627CCC9A9AF3D4E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalizationLongtermDebtAndEquityAbstract_CCC9FADCC22A0D3A6627CCC9A9AF3D4E" xlink:to="lab_us-gaap_CapitalizationLongtermDebtAndEquityAbstract_CCC9FADCC22A0D3A6627CCC9A9AF3D4E" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockValue_203767C7AAD5196BAFBECCC9A9B046CF_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue_203767C7AAD5196BAFBECCC9A9B046CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding: 36,745,039 shares in 2018 and 36,680,794 shares in 2017</link:label>
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    <link:label id="lab_us-gaap_AccountsPayableCurrent_DF0715DCFB04674DCC61CCC9A9B2C4EA_label_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_DF0715DCFB04674DCC61CCC9A9B2C4EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Payable, Current</link:label>
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    <link:label id="lab_us-gaap_RegulatoryLiabilityDomain_C420ABDE95B796F33F0EE57EB9F6FAF3_label_en-US" xlink:label="lab_us-gaap_RegulatoryLiabilityDomain_C420ABDE95B796F33F0EE57EB9F6FAF3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Liability [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryLiabilityDomain" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_C420ABDE95B796F33F0EE57EB9F6FAF3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_C420ABDE95B796F33F0EE57EB9F6FAF3" xlink:to="lab_us-gaap_RegulatoryLiabilityDomain_C420ABDE95B796F33F0EE57EB9F6FAF3" xlink:type="arc" />
    <link:label id="lab_awr_RevenueSubjecttoRefundforTCJAMember_1BB40BC135CF14DE0B39E57EB9F6FCF5_terseLabel_en-US" xlink:label="lab_awr_RevenueSubjecttoRefundforTCJAMember_1BB40BC135CF14DE0B39E57EB9F6FCF5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax Cuts and Jobs Act (Tax Act) memorandum accounts</link:label>
    <link:label id="lab_awr_RevenueSubjecttoRefundforTCJAMember_1BB40BC135CF14DE0B39E57EB9F6FCF5_label_en-US" xlink:label="lab_awr_RevenueSubjecttoRefundforTCJAMember_1BB40BC135CF14DE0B39E57EB9F6FCF5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue Subject to Refund for TCJA [Member]</link:label>
    <link:label id="lab_awr_RevenueSubjecttoRefundforTCJAMember_1BB40BC135CF14DE0B39E57EB9F6FCF5_documentation_en-US" xlink:label="lab_awr_RevenueSubjecttoRefundforTCJAMember_1BB40BC135CF14DE0B39E57EB9F6FCF5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tax cuts and Job ACT("Tax Act") memorandum accounts</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_RevenueSubjecttoRefundforTCJAMember" xlink:label="loc_awr_RevenueSubjecttoRefundforTCJAMember_1BB40BC135CF14DE0B39E57EB9F6FCF5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_RevenueSubjecttoRefundforTCJAMember_1BB40BC135CF14DE0B39E57EB9F6FCF5" xlink:to="lab_awr_RevenueSubjecttoRefundforTCJAMember_1BB40BC135CF14DE0B39E57EB9F6FCF5" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueSubjectToRefundMember_799C8F4574F7FC03CF5DE57EB9F6049C_verboseLabel_en-US" xlink:label="lab_us-gaap_RevenueSubjectToRefundMember_799C8F4574F7FC03CF5DE57EB9F6049C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Various refunds to customers</link:label>
    <link:label id="lab_us-gaap_RevenueSubjectToRefundMember_799C8F4574F7FC03CF5DE57EB9F6049C_label_en-US" xlink:label="lab_us-gaap_RevenueSubjectToRefundMember_799C8F4574F7FC03CF5DE57EB9F6049C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue Subject to Refund [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RevenueSubjectToRefundMember" xlink:label="loc_us-gaap_RevenueSubjectToRefundMember_799C8F4574F7FC03CF5DE57EB9F6049C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueSubjectToRefundMember_799C8F4574F7FC03CF5DE57EB9F6049C" xlink:to="lab_us-gaap_RevenueSubjectToRefundMember_799C8F4574F7FC03CF5DE57EB9F6049C" xlink:type="arc" />
    <link:label id="lab_awr_WaterRevenueAdjustmentMechanismNetOfModifiedCostBalancingAccountMember_C29432848E9A4FEEEB3FE57EB9F728D3_verboseLabel_en-US" xlink:label="lab_awr_WaterRevenueAdjustmentMechanismNetOfModifiedCostBalancingAccountMember_C29432848E9A4FEEEB3FE57EB9F728D3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Water Revenue Adjustment Mechanism, net of Modified Cost Balancing Account</link:label>
    <link:label id="lab_awr_WaterRevenueAdjustmentMechanismNetOfModifiedCostBalancingAccountMember_C29432848E9A4FEEEB3FE57EB9F728D3_label_en-US" xlink:label="lab_awr_WaterRevenueAdjustmentMechanismNetOfModifiedCostBalancingAccountMember_C29432848E9A4FEEEB3FE57EB9F728D3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Water Revenue Adjustment Mechanism Net of Modified Cost Balancing Account [Member]</link:label>
    <link:label id="lab_awr_WaterRevenueAdjustmentMechanismNetOfModifiedCostBalancingAccountMember_C29432848E9A4FEEEB3FE57EB9F728D3_documentation_en-US" xlink:label="lab_awr_WaterRevenueAdjustmentMechanismNetOfModifiedCostBalancingAccountMember_C29432848E9A4FEEEB3FE57EB9F728D3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the regulatory assets arising from water revenue adjustment mechanism, net of modified cost balancing account.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_WaterRevenueAdjustmentMechanismNetOfModifiedCostBalancingAccountMember" xlink:label="loc_awr_WaterRevenueAdjustmentMechanismNetOfModifiedCostBalancingAccountMember_C29432848E9A4FEEEB3FE57EB9F728D3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_WaterRevenueAdjustmentMechanismNetOfModifiedCostBalancingAccountMember_C29432848E9A4FEEEB3FE57EB9F728D3" xlink:to="lab_awr_WaterRevenueAdjustmentMechanismNetOfModifiedCostBalancingAccountMember_C29432848E9A4FEEEB3FE57EB9F728D3" xlink:type="arc" />
    <link:label id="lab_awr_CostsDeferredForFutureRecoveryOnAerojetCaseMember_67965221AB26550D4F6EE57EB9F777D8_terseLabel_en-US" xlink:label="lab_awr_CostsDeferredForFutureRecoveryOnAerojetCaseMember_67965221AB26550D4F6EE57EB9F777D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Costs deferred for future recovery on Aerojet case</link:label>
    <link:label id="lab_awr_CostsDeferredForFutureRecoveryOnAerojetCaseMember_67965221AB26550D4F6EE57EB9F777D8_label_en-US" xlink:label="lab_awr_CostsDeferredForFutureRecoveryOnAerojetCaseMember_67965221AB26550D4F6EE57EB9F777D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Costs Deferred for Future Recovery on Aerojet Case [Member]</link:label>
    <link:label id="lab_awr_CostsDeferredForFutureRecoveryOnAerojetCaseMember_67965221AB26550D4F6EE57EB9F777D8_documentation_en-US" xlink:label="lab_awr_CostsDeferredForFutureRecoveryOnAerojetCaseMember_67965221AB26550D4F6EE57EB9F777D8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the regulatory assets arising from costs deferred for future recovery on Aerojet case.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_CostsDeferredForFutureRecoveryOnAerojetCaseMember" xlink:label="loc_awr_CostsDeferredForFutureRecoveryOnAerojetCaseMember_67965221AB26550D4F6EE57EB9F777D8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_CostsDeferredForFutureRecoveryOnAerojetCaseMember_67965221AB26550D4F6EE57EB9F777D8" xlink:to="lab_awr_CostsDeferredForFutureRecoveryOnAerojetCaseMember_67965221AB26550D4F6EE57EB9F777D8" xlink:type="arc" />
    <link:label id="lab_awr_PensionCostsAndOtherPostretirementBenefitCostsMember_DB78C208116EA46F813DE57EB9F7D5B4_terseLabel_en-US" xlink:label="lab_awr_PensionCostsAndOtherPostretirementBenefitCostsMember_DB78C208116EA46F813DE57EB9F7D5B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pensions and other post-retirement obligations (Note 8)</link:label>
    <link:label id="lab_awr_PensionCostsAndOtherPostretirementBenefitCostsMember_DB78C208116EA46F813DE57EB9F7D5B4_label_en-US" xlink:label="lab_awr_PensionCostsAndOtherPostretirementBenefitCostsMember_DB78C208116EA46F813DE57EB9F7D5B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pension Costs and Other Postretirement Benefit Costs [Member]</link:label>
    <link:label id="lab_awr_PensionCostsAndOtherPostretirementBenefitCostsMember_DB78C208116EA46F813DE57EB9F7D5B4_documentation_en-US" xlink:label="lab_awr_PensionCostsAndOtherPostretirementBenefitCostsMember_DB78C208116EA46F813DE57EB9F7D5B4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the regulatory assets arising from pensions and other post-retirement obligations.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_PensionCostsAndOtherPostretirementBenefitCostsMember" xlink:label="loc_awr_PensionCostsAndOtherPostretirementBenefitCostsMember_DB78C208116EA46F813DE57EB9F7D5B4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_PensionCostsAndOtherPostretirementBenefitCostsMember_DB78C208116EA46F813DE57EB9F7D5B4" xlink:to="lab_awr_PensionCostsAndOtherPostretirementBenefitCostsMember_DB78C208116EA46F813DE57EB9F7D5B4" xlink:type="arc" />
    <link:label id="lab_us-gaap_GainLossOnDerivativeInstrumentsMember_CD4ABF643DAC70A46142E57EB9F8393E_terseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnDerivativeInstrumentsMember_CD4ABF643DAC70A46142E57EB9F8393E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative unrealized loss (Note 5)</link:label>
    <link:label id="lab_us-gaap_GainLossOnDerivativeInstrumentsMember_CD4ABF643DAC70A46142E57EB9F8393E_label_en-US" xlink:label="lab_us-gaap_GainLossOnDerivativeInstrumentsMember_CD4ABF643DAC70A46142E57EB9F8393E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain (Loss) on Derivative Instruments [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GainLossOnDerivativeInstrumentsMember" xlink:label="loc_us-gaap_GainLossOnDerivativeInstrumentsMember_CD4ABF643DAC70A46142E57EB9F8393E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnDerivativeInstrumentsMember_CD4ABF643DAC70A46142E57EB9F8393E" xlink:to="lab_us-gaap_GainLossOnDerivativeInstrumentsMember_CD4ABF643DAC70A46142E57EB9F8393E" xlink:type="arc" />
    <link:label id="lab_awr_LowIncomeRateAssistanceBalancingAccountsMember_7E464652EAABE22A6642E57EB9F8F710_verboseLabel_en-US" xlink:label="lab_awr_LowIncomeRateAssistanceBalancingAccountsMember_7E464652EAABE22A6642E57EB9F8F710" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Low income rate assistance balancing accounts</link:label>
    <link:label id="lab_awr_LowIncomeRateAssistanceBalancingAccountsMember_7E464652EAABE22A6642E57EB9F8F710_label_en-US" xlink:label="lab_awr_LowIncomeRateAssistanceBalancingAccountsMember_7E464652EAABE22A6642E57EB9F8F710" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Low Income Rate Assistance Balancing Accounts [Member]</link:label>
    <link:label id="lab_awr_LowIncomeRateAssistanceBalancingAccountsMember_7E464652EAABE22A6642E57EB9F8F710_documentation_en-US" xlink:label="lab_awr_LowIncomeRateAssistanceBalancingAccountsMember_7E464652EAABE22A6642E57EB9F8F710" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the regulatory assets arising from low income rate assistance balancing accounts.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_LowIncomeRateAssistanceBalancingAccountsMember" xlink:label="loc_awr_LowIncomeRateAssistanceBalancingAccountsMember_7E464652EAABE22A6642E57EB9F8F710" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_LowIncomeRateAssistanceBalancingAccountsMember_7E464652EAABE22A6642E57EB9F8F710" xlink:to="lab_awr_LowIncomeRateAssistanceBalancingAccountsMember_7E464652EAABE22A6642E57EB9F8F710" xlink:type="arc" />
    <link:label id="lab_awr_OtherRegulatoryAssetsNetMember_551CBBCD9DA239F728D9E57EB9F83C2F_verboseLabel_en-US" xlink:label="lab_awr_OtherRegulatoryAssetsNetMember_551CBBCD9DA239F728D9E57EB9F83C2F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other regulatory assets</link:label>
    <link:label id="lab_awr_OtherRegulatoryAssetsNetMember_551CBBCD9DA239F728D9E57EB9F83C2F_label_en-US" xlink:label="lab_awr_OtherRegulatoryAssetsNetMember_551CBBCD9DA239F728D9E57EB9F83C2F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Regulatory Assets Net [Member]</link:label>
    <link:label id="lab_awr_OtherRegulatoryAssetsNetMember_551CBBCD9DA239F728D9E57EB9F83C2F_documentation_en-US" xlink:label="lab_awr_OtherRegulatoryAssetsNetMember_551CBBCD9DA239F728D9E57EB9F83C2F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the regulatory assets arising from other regulatory matters not specified in the taxonomy.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_OtherRegulatoryAssetsNetMember" xlink:label="loc_awr_OtherRegulatoryAssetsNetMember_551CBBCD9DA239F728D9E57EB9F83C2F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_OtherRegulatoryAssetsNetMember_551CBBCD9DA239F728D9E57EB9F83C2F" xlink:to="lab_awr_OtherRegulatoryAssetsNetMember_551CBBCD9DA239F728D9E57EB9F83C2F" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredIncomeTaxChargesMember_DB3B78F493CEF8C69020E57EB9F8794A_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxChargesMember_DB3B78F493CEF8C69020E57EB9F8794A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Excess deferred income taxes (Note 7)</link:label>
    <link:label id="lab_us-gaap_DeferredIncomeTaxChargesMember_DB3B78F493CEF8C69020E57EB9F8794A_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxChargesMember_DB3B78F493CEF8C69020E57EB9F8794A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Income Tax Charge [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredIncomeTaxChargesMember" xlink:label="loc_us-gaap_DeferredIncomeTaxChargesMember_DB3B78F493CEF8C69020E57EB9F8794A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredIncomeTaxChargesMember_DB3B78F493CEF8C69020E57EB9F8794A" xlink:to="lab_us-gaap_DeferredIncomeTaxChargesMember_DB3B78F493CEF8C69020E57EB9F8794A" xlink:type="arc" />
    <link:label id="lab_awr_FlowThroughTaxesNetMember_73F15483BDDD64D5603CE57EB9F93C5A_terseLabel_en-US" xlink:label="lab_awr_FlowThroughTaxesNetMember_73F15483BDDD64D5603CE57EB9F93C5A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Flow-through taxes, net (Note 7)</link:label>
    <link:label id="lab_awr_FlowThroughTaxesNetMember_73F15483BDDD64D5603CE57EB9F93C5A_label_en-US" xlink:label="lab_awr_FlowThroughTaxesNetMember_73F15483BDDD64D5603CE57EB9F93C5A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Flow Through Taxes Net [Member]</link:label>
    <link:label id="lab_awr_FlowThroughTaxesNetMember_73F15483BDDD64D5603CE57EB9F93C5A_documentation_en-US" xlink:label="lab_awr_FlowThroughTaxesNetMember_73F15483BDDD64D5603CE57EB9F93C5A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the regulatory assets arising from flow-through taxes, net.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_FlowThroughTaxesNetMember" xlink:label="loc_awr_FlowThroughTaxesNetMember_73F15483BDDD64D5603CE57EB9F93C5A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_FlowThroughTaxesNetMember_73F15483BDDD64D5603CE57EB9F93C5A" xlink:to="lab_awr_FlowThroughTaxesNetMember_73F15483BDDD64D5603CE57EB9F93C5A" xlink:type="arc" />
    <link:label id="lab_awr_ModifiedCostBalancingAccountMember_50CD69B8187739DE20BAE57EB9FAD22F_terseLabel_en-US" xlink:label="lab_awr_ModifiedCostBalancingAccountMember_50CD69B8187739DE20BAE57EB9FAD22F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Modified Cost Balancing Account [Member]</link:label>
    <link:label id="lab_awr_ModifiedCostBalancingAccountMember_50CD69B8187739DE20BAE57EB9FAD22F_label_en-US" xlink:label="lab_awr_ModifiedCostBalancingAccountMember_50CD69B8187739DE20BAE57EB9FAD22F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Modified Cost Balancing Account [Member]</link:label>
    <link:label id="lab_awr_ModifiedCostBalancingAccountMember_50CD69B8187739DE20BAE57EB9FAD22F_documentation_en-US" xlink:label="lab_awr_ModifiedCostBalancingAccountMember_50CD69B8187739DE20BAE57EB9FAD22F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the regulatory assets arising from modified cost balancing account.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_ModifiedCostBalancingAccountMember" xlink:label="loc_awr_ModifiedCostBalancingAccountMember_50CD69B8187739DE20BAE57EB9FAD22F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_ModifiedCostBalancingAccountMember_50CD69B8187739DE20BAE57EB9FAD22F" xlink:to="lab_awr_ModifiedCostBalancingAccountMember_50CD69B8187739DE20BAE57EB9FAD22F" xlink:type="arc" />
    <link:label id="lab_awr_CostOfCapitalProceedingForWaterRegionsMember_0007DA332C07EEB750C6E57EB9FAEB50_terseLabel_en-US" xlink:label="lab_awr_CostOfCapitalProceedingForWaterRegionsMember_0007DA332C07EEB750C6E57EB9FAEB50" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cost of Capital, Proceeding for Water Regions [Member]</link:label>
    <link:label id="lab_awr_CostOfCapitalProceedingForWaterRegionsMember_0007DA332C07EEB750C6E57EB9FAEB50_label_en-US" xlink:label="lab_awr_CostOfCapitalProceedingForWaterRegionsMember_0007DA332C07EEB750C6E57EB9FAEB50" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of Capital, Proceeding for Water Regions [Member]</link:label>
    <link:label id="lab_awr_CostOfCapitalProceedingForWaterRegionsMember_0007DA332C07EEB750C6E57EB9FAEB50_documentation_en-US" xlink:label="lab_awr_CostOfCapitalProceedingForWaterRegionsMember_0007DA332C07EEB750C6E57EB9FAEB50" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information pertaining to Cost of Capital Proceeding for Water Regions.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_CostOfCapitalProceedingForWaterRegionsMember" xlink:label="loc_awr_CostOfCapitalProceedingForWaterRegionsMember_0007DA332C07EEB750C6E57EB9FAEB50" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_CostOfCapitalProceedingForWaterRegionsMember_0007DA332C07EEB750C6E57EB9FAEB50" xlink:to="lab_awr_CostOfCapitalProceedingForWaterRegionsMember_0007DA332C07EEB750C6E57EB9FAEB50" xlink:type="arc" />
    <link:label id="lab_awr_PendingGeneralRateCaseMember_AA2109D3B92DDD1E69F2E57EB9FA1C03_terseLabel_en-US" xlink:label="lab_awr_PendingGeneralRateCaseMember_AA2109D3B92DDD1E69F2E57EB9FA1C03" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pending General Rate Case [Member]</link:label>
    <link:label id="lab_awr_PendingGeneralRateCaseMember_AA2109D3B92DDD1E69F2E57EB9FA1C03_label_en-US" xlink:label="lab_awr_PendingGeneralRateCaseMember_AA2109D3B92DDD1E69F2E57EB9FA1C03" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pending General Rate Case [Member]</link:label>
    <link:label id="lab_awr_PendingGeneralRateCaseMember_AA2109D3B92DDD1E69F2E57EB9FA1C03_documentation_en-US" xlink:label="lab_awr_PendingGeneralRateCaseMember_AA2109D3B92DDD1E69F2E57EB9FA1C03" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Pending General Rate Case [Member]</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_PendingGeneralRateCaseMember" xlink:label="loc_awr_PendingGeneralRateCaseMember_AA2109D3B92DDD1E69F2E57EB9FA1C03" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_PendingGeneralRateCaseMember_AA2109D3B92DDD1E69F2E57EB9FA1C03" xlink:to="lab_awr_PendingGeneralRateCaseMember_AA2109D3B92DDD1E69F2E57EB9FA1C03" xlink:type="arc" />
    <link:label id="lab_awr_InvestmentTerm_3E9A672D1EFA326B5037E57EB9FAF192_terseLabel_en-US" xlink:label="lab_awr_InvestmentTerm_3E9A672D1EFA326B5037E57EB9FAF192" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment Term</link:label>
    <link:label id="lab_awr_InvestmentTerm_3E9A672D1EFA326B5037E57EB9FAF192_label_en-US" xlink:label="lab_awr_InvestmentTerm_3E9A672D1EFA326B5037E57EB9FAF192" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment Term</link:label>
    <link:label id="lab_awr_InvestmentTerm_3E9A672D1EFA326B5037E57EB9FAF192_documentation_en-US" xlink:label="lab_awr_InvestmentTerm_3E9A672D1EFA326B5037E57EB9FAF192" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the term associated with a fixed-term security.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_InvestmentTerm" xlink:label="loc_awr_InvestmentTerm_3E9A672D1EFA326B5037E57EB9FAF192" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_InvestmentTerm_3E9A672D1EFA326B5037E57EB9FAF192" xlink:to="lab_awr_InvestmentTerm_3E9A672D1EFA326B5037E57EB9FAF192" xlink:type="arc" />
    <link:label id="lab_awr_RegulatoryAssetNotAccruingCarryingCosts_7D8ADF22E5A20ABBA370E57EB9FB2DB8_terseLabel_en-US" xlink:label="lab_awr_RegulatoryAssetNotAccruingCarryingCosts_7D8ADF22E5A20ABBA370E57EB9FB2DB8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Regulatory asset not accruing carrying costs</link:label>
    <link:label id="lab_awr_RegulatoryAssetNotAccruingCarryingCosts_7D8ADF22E5A20ABBA370E57EB9FB2DB8_label_en-US" xlink:label="lab_awr_RegulatoryAssetNotAccruingCarryingCosts_7D8ADF22E5A20ABBA370E57EB9FB2DB8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Asset Not Accruing Carrying Costs</link:label>
    <link:label id="lab_awr_RegulatoryAssetNotAccruingCarryingCosts_7D8ADF22E5A20ABBA370E57EB9FB2DB8_documentation_en-US" xlink:label="lab_awr_RegulatoryAssetNotAccruingCarryingCosts_7D8ADF22E5A20ABBA370E57EB9FB2DB8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the regulatory asset not accruing carrying costs as of the balance sheet date.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_RegulatoryAssetNotAccruingCarryingCosts" xlink:label="loc_awr_RegulatoryAssetNotAccruingCarryingCosts_7D8ADF22E5A20ABBA370E57EB9FB2DB8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_RegulatoryAssetNotAccruingCarryingCosts_7D8ADF22E5A20ABBA370E57EB9FB2DB8" xlink:to="lab_awr_RegulatoryAssetNotAccruingCarryingCosts_7D8ADF22E5A20ABBA370E57EB9FB2DB8" xlink:type="arc" />
    <link:label id="lab_awr_RegulatoryAssetAmountBilledToCustomersAsSurcharges_F2F0425EB3F22703A868E57EB9FB51C9_terseLabel_en-US" xlink:label="lab_awr_RegulatoryAssetAmountBilledToCustomersAsSurcharges_F2F0425EB3F22703A868E57EB9FB51C9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Regulatory Asset Amount Billed to Customers as Surcharges</link:label>
    <link:label id="lab_awr_RegulatoryAssetAmountBilledToCustomersAsSurcharges_F2F0425EB3F22703A868E57EB9FB51C9_label_en-US" xlink:label="lab_awr_RegulatoryAssetAmountBilledToCustomersAsSurcharges_F2F0425EB3F22703A868E57EB9FB51C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Asset Amount Billed to Customers as Surcharges</link:label>
    <link:label id="lab_awr_RegulatoryAssetAmountBilledToCustomersAsSurcharges_F2F0425EB3F22703A868E57EB9FB51C9_documentation_en-US" xlink:label="lab_awr_RegulatoryAssetAmountBilledToCustomersAsSurcharges_F2F0425EB3F22703A868E57EB9FB51C9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents amount billed to customers as surcharges.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_RegulatoryAssetAmountBilledToCustomersAsSurcharges" xlink:label="loc_awr_RegulatoryAssetAmountBilledToCustomersAsSurcharges_F2F0425EB3F22703A868E57EB9FB51C9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_RegulatoryAssetAmountBilledToCustomersAsSurcharges_F2F0425EB3F22703A868E57EB9FB51C9" xlink:to="lab_awr_RegulatoryAssetAmountBilledToCustomersAsSurcharges_F2F0425EB3F22703A868E57EB9FB51C9" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherRegulatoryAssets_90014529032E3001D82EE57EB9FB84FA_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherRegulatoryAssets_90014529032E3001D82EE57EB9FB84FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Other Regulatory Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOtherRegulatoryAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherRegulatoryAssets_90014529032E3001D82EE57EB9FB84FA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherRegulatoryAssets_90014529032E3001D82EE57EB9FB84FA" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherRegulatoryAssets_90014529032E3001D82EE57EB9FB84FA" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetRegulatoryAssets_42F67F9B7B7E28B1CECAE57EB9FBAED8_verboseLabel_en-US" xlink:label="lab_us-gaap_NetRegulatoryAssets_42F67F9B7B7E28B1CECAE57EB9FBAED8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Regulatory assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetRegulatoryAssets" xlink:label="loc_us-gaap_NetRegulatoryAssets_42F67F9B7B7E28B1CECAE57EB9FBAED8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetRegulatoryAssets_42F67F9B7B7E28B1CECAE57EB9FBAED8" xlink:to="lab_us-gaap_NetRegulatoryAssets_42F67F9B7B7E28B1CECAE57EB9FBAED8" xlink:type="arc" />
    <link:label id="lab_awr_Adjustmentsrecordedtorevaluedeferredtaxesasaresultofthetaxcutandjobactof2017impact_C820789295738E7F66D9E57EB9FCA26A_terseLabel_en-US" xlink:label="lab_awr_Adjustmentsrecordedtorevaluedeferredtaxesasaresultofthetaxcutandjobactof2017impact_C820789295738E7F66D9E57EB9FCA26A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustments recorded to revalue deferred taxes as a result of the tax cut and job act of 2017 impact</link:label>
    <link:label id="lab_awr_Adjustmentsrecordedtorevaluedeferredtaxesasaresultofthetaxcutandjobactof2017impact_C820789295738E7F66D9E57EB9FCA26A_label_en-US" xlink:label="lab_awr_Adjustmentsrecordedtorevaluedeferredtaxesasaresultofthetaxcutandjobactof2017impact_C820789295738E7F66D9E57EB9FCA26A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments recorded to revalue deferred taxes as a result of the tax cut and job act of 2017 impact</link:label>
    <link:label id="lab_awr_Adjustmentsrecordedtorevaluedeferredtaxesasaresultofthetaxcutandjobactof2017impact_C820789295738E7F66D9E57EB9FCA26A_documentation_en-US" xlink:label="lab_awr_Adjustmentsrecordedtorevaluedeferredtaxesasaresultofthetaxcutandjobactof2017impact_C820789295738E7F66D9E57EB9FCA26A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Adjustments recorded to revalue deferred taxes as a result of the tax cut and job act of 2017 impact</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_Adjustmentsrecordedtorevaluedeferredtaxesasaresultofthetaxcutandjobactof2017impact" xlink:label="loc_awr_Adjustmentsrecordedtorevaluedeferredtaxesasaresultofthetaxcutandjobactof2017impact_C820789295738E7F66D9E57EB9FCA26A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_Adjustmentsrecordedtorevaluedeferredtaxesasaresultofthetaxcutandjobactof2017impact_C820789295738E7F66D9E57EB9FCA26A" xlink:to="lab_awr_Adjustmentsrecordedtorevaluedeferredtaxesasaresultofthetaxcutandjobactof2017impact_C820789295738E7F66D9E57EB9FCA26A" xlink:type="arc" />
    <link:label id="lab_awr_ReturnonEquityPercentage_0D67E35DB7E62F168781E57EB9FC3FB3_terseLabel_en-US" xlink:label="lab_awr_ReturnonEquityPercentage_0D67E35DB7E62F168781E57EB9FC3FB3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Return on Equity Percentage</link:label>
    <link:label id="lab_awr_ReturnonEquityPercentage_0D67E35DB7E62F168781E57EB9FC3FB3_label_en-US" xlink:label="lab_awr_ReturnonEquityPercentage_0D67E35DB7E62F168781E57EB9FC3FB3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Return on Equity Percentage</link:label>
    <link:label id="lab_awr_ReturnonEquityPercentage_0D67E35DB7E62F168781E57EB9FC3FB3_documentation_en-US" xlink:label="lab_awr_ReturnonEquityPercentage_0D67E35DB7E62F168781E57EB9FC3FB3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Return on Equity Percentage</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_ReturnonEquityPercentage" xlink:label="loc_awr_ReturnonEquityPercentage_0D67E35DB7E62F168781E57EB9FC3FB3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_ReturnonEquityPercentage_0D67E35DB7E62F168781E57EB9FC3FB3" xlink:to="lab_awr_ReturnonEquityPercentage_0D67E35DB7E62F168781E57EB9FC3FB3" xlink:type="arc" />
    <link:label id="lab_awr_WeightedCostOfCapitalPercent_23D2767CBBEADD1420ABE57EB9FC2C89_terseLabel_en-US" xlink:label="lab_awr_WeightedCostOfCapitalPercent_23D2767CBBEADD1420ABE57EB9FC2C89" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted Cost of Capital Percent</link:label>
    <link:label id="lab_awr_WeightedCostOfCapitalPercent_23D2767CBBEADD1420ABE57EB9FC2C89_label_en-US" xlink:label="lab_awr_WeightedCostOfCapitalPercent_23D2767CBBEADD1420ABE57EB9FC2C89" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Cost of Capital Percent</link:label>
    <link:label id="lab_awr_WeightedCostOfCapitalPercent_23D2767CBBEADD1420ABE57EB9FC2C89_documentation_en-US" xlink:label="lab_awr_WeightedCostOfCapitalPercent_23D2767CBBEADD1420ABE57EB9FC2C89" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the weighted cost of capital (return on rate base), with an updated embedded debt cost and the settlement ROE.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_WeightedCostOfCapitalPercent" xlink:label="loc_awr_WeightedCostOfCapitalPercent_23D2767CBBEADD1420ABE57EB9FC2C89" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_WeightedCostOfCapitalPercent_23D2767CBBEADD1420ABE57EB9FC2C89" xlink:to="lab_awr_WeightedCostOfCapitalPercent_23D2767CBBEADD1420ABE57EB9FC2C89" xlink:type="arc" />
    <link:label id="lab_awr_DecreaseinrevenuesrequirementtoreflectthenewlyadoptedCostofCapitalforGSWC_9C8A5EBBA8DE60B8BCEEE57EB9FC0E67_terseLabel_en-US" xlink:label="lab_awr_DecreaseinrevenuesrequirementtoreflectthenewlyadoptedCostofCapitalforGSWC_9C8A5EBBA8DE60B8BCEEE57EB9FC0E67" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Decrease in revenues requirement to reflect the newly adopted Cost of Capital for GSWC</link:label>
    <link:label id="lab_awr_DecreaseinrevenuesrequirementtoreflectthenewlyadoptedCostofCapitalforGSWC_9C8A5EBBA8DE60B8BCEEE57EB9FC0E67_label_en-US" xlink:label="lab_awr_DecreaseinrevenuesrequirementtoreflectthenewlyadoptedCostofCapitalforGSWC_9C8A5EBBA8DE60B8BCEEE57EB9FC0E67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease in revenues requirement to reflect the newly adopted Cost of Capital for GSWC</link:label>
    <link:label id="lab_awr_DecreaseinrevenuesrequirementtoreflectthenewlyadoptedCostofCapitalforGSWC_9C8A5EBBA8DE60B8BCEEE57EB9FC0E67_documentation_en-US" xlink:label="lab_awr_DecreaseinrevenuesrequirementtoreflectthenewlyadoptedCostofCapitalforGSWC_9C8A5EBBA8DE60B8BCEEE57EB9FC0E67" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Decrease in revenues requirement to reflect the newly adopted Cost of Capital for GSWC</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_DecreaseinrevenuesrequirementtoreflectthenewlyadoptedCostofCapitalforGSWC" xlink:label="loc_awr_DecreaseinrevenuesrequirementtoreflectthenewlyadoptedCostofCapitalforGSWC_9C8A5EBBA8DE60B8BCEEE57EB9FC0E67" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_DecreaseinrevenuesrequirementtoreflectthenewlyadoptedCostofCapitalforGSWC_9C8A5EBBA8DE60B8BCEEE57EB9FC0E67" xlink:to="lab_awr_DecreaseinrevenuesrequirementtoreflectthenewlyadoptedCostofCapitalforGSWC_9C8A5EBBA8DE60B8BCEEE57EB9FC0E67" xlink:type="arc" />
    <link:label id="lab_awr_RecoveryPeriodForUnderCollectionBalancesGreaterThan15PercentOfAdoptedAnnualRevenues_EA8895A716510676440FE57EB9FD68CA_terseLabel_en-US" xlink:label="lab_awr_RecoveryPeriodForUnderCollectionBalancesGreaterThan15PercentOfAdoptedAnnualRevenues_EA8895A716510676440FE57EB9FD68CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Recovery Period for under Collection, Balances Greater than 15 Percent of Adopted Annual Revenues</link:label>
    <link:label id="lab_awr_RecoveryPeriodForUnderCollectionBalancesGreaterThan15PercentOfAdoptedAnnualRevenues_EA8895A716510676440FE57EB9FD68CA_label_en-US" xlink:label="lab_awr_RecoveryPeriodForUnderCollectionBalancesGreaterThan15PercentOfAdoptedAnnualRevenues_EA8895A716510676440FE57EB9FD68CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recovery Period for under Collection, Balances Greater than 15 Percent of Adopted Annual Revenues</link:label>
    <link:label id="lab_awr_RecoveryPeriodForUnderCollectionBalancesGreaterThan15PercentOfAdoptedAnnualRevenues_EA8895A716510676440FE57EB9FD68CA_documentation_en-US" xlink:label="lab_awr_RecoveryPeriodForUnderCollectionBalancesGreaterThan15PercentOfAdoptedAnnualRevenues_EA8895A716510676440FE57EB9FD68CA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the recovery period for under-collection balances greater than 15 percent of adopted annual revenues.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_RecoveryPeriodForUnderCollectionBalancesGreaterThan15PercentOfAdoptedAnnualRevenues" xlink:label="loc_awr_RecoveryPeriodForUnderCollectionBalancesGreaterThan15PercentOfAdoptedAnnualRevenues_EA8895A716510676440FE57EB9FD68CA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_RecoveryPeriodForUnderCollectionBalancesGreaterThan15PercentOfAdoptedAnnualRevenues_EA8895A716510676440FE57EB9FD68CA" xlink:to="lab_awr_RecoveryPeriodForUnderCollectionBalancesGreaterThan15PercentOfAdoptedAnnualRevenues_EA8895A716510676440FE57EB9FD68CA" xlink:type="arc" />
    <link:label id="lab_awr_SettlementAgreementProposedAuthorizedReturnOnEquityPercentage_AF451E975D70E8CFBDE6E57EB9FDE159_terseLabel_en-US" xlink:label="lab_awr_SettlementAgreementProposedAuthorizedReturnOnEquityPercentage_AF451E975D70E8CFBDE6E57EB9FDE159" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Settlement Agreement Proposed Authorized Return on Equity Percentage</link:label>
    <link:label id="lab_awr_SettlementAgreementProposedAuthorizedReturnOnEquityPercentage_AF451E975D70E8CFBDE6E57EB9FDE159_label_en-US" xlink:label="lab_awr_SettlementAgreementProposedAuthorizedReturnOnEquityPercentage_AF451E975D70E8CFBDE6E57EB9FDE159" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Settlement Agreement Proposed Authorized Return on Equity Percentage</link:label>
    <link:label id="lab_awr_SettlementAgreementProposedAuthorizedReturnOnEquityPercentage_AF451E975D70E8CFBDE6E57EB9FDE159_documentation_en-US" xlink:label="lab_awr_SettlementAgreementProposedAuthorizedReturnOnEquityPercentage_AF451E975D70E8CFBDE6E57EB9FDE159" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the percentage of proposed authorized ROE under the settlement agreement.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_SettlementAgreementProposedAuthorizedReturnOnEquityPercentage" xlink:label="loc_awr_SettlementAgreementProposedAuthorizedReturnOnEquityPercentage_AF451E975D70E8CFBDE6E57EB9FDE159" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_82E626D1A09C0061352ACCC9A93AAF2C_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_82E626D1A09C0061352ACCC9A93AAF2C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_82E626D1A09C0061352ACCC9A93AAF2C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_82E626D1A09C0061352ACCC9A93AAF2C" xlink:to="lab_us-gaap_LongtermDebtTypeDomain_82E626D1A09C0061352ACCC9A93AAF2C" xlink:type="arc" />
    <link:label id="lab_awr_SyndicatedRevolvingCreditFacilityMember_ADCFB6B5330C4A15552ACCC9A93AA0E6_terseLabel_en-US" xlink:label="lab_awr_SyndicatedRevolvingCreditFacilityMember_ADCFB6B5330C4A15552ACCC9A93AA0E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Syndicated Credit Facility</link:label>
    <link:label id="lab_awr_SyndicatedRevolvingCreditFacilityMember_ADCFB6B5330C4A15552ACCC9A93AA0E6_label_en-US" xlink:label="lab_awr_SyndicatedRevolvingCreditFacilityMember_ADCFB6B5330C4A15552ACCC9A93AA0E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Syndicated Revolving Credit Facility [Member]</link:label>
    <link:label id="lab_awr_SyndicatedRevolvingCreditFacilityMember_ADCFB6B5330C4A15552ACCC9A93AA0E6_documentation_en-US" xlink:label="lab_awr_SyndicatedRevolvingCreditFacilityMember_ADCFB6B5330C4A15552ACCC9A93AA0E6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents activity related to the syndicated revolving credit facility.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_SyndicatedRevolvingCreditFacilityMember" xlink:label="loc_awr_SyndicatedRevolvingCreditFacilityMember_ADCFB6B5330C4A15552ACCC9A93AA0E6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_SyndicatedRevolvingCreditFacilityMember_ADCFB6B5330C4A15552ACCC9A93AA0E6" xlink:to="lab_awr_SyndicatedRevolvingCreditFacilityMember_ADCFB6B5330C4A15552ACCC9A93AA0E6" xlink:type="arc" />
    <link:label id="lab_awr_NotesPayable6.7PercentDue2019Member_071B290EEA4F86B71269CCC9A93A4ED3_terseLabel_en-US" xlink:label="lab_awr_NotesPayable6.7PercentDue2019Member_071B290EEA4F86B71269CCC9A93A4ED3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notes Payable 6.7 Percent Due 2019</link:label>
    <link:label id="lab_awr_NotesPayable6.7PercentDue2019Member_071B290EEA4F86B71269CCC9A93A4ED3_label_en-US" xlink:label="lab_awr_NotesPayable6.7PercentDue2019Member_071B290EEA4F86B71269CCC9A93A4ED3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notes Payable 6.7 Percent Due 2019 [Member]</link:label>
    <link:label id="lab_awr_NotesPayable6.7PercentDue2019Member_071B290EEA4F86B71269CCC9A93A4ED3_documentation_en-US" xlink:label="lab_awr_NotesPayable6.7PercentDue2019Member_071B290EEA4F86B71269CCC9A93A4ED3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the 6.7 percent notes, due in 2019.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_NotesPayable6.7PercentDue2019Member" xlink:label="loc_awr_NotesPayable6.7PercentDue2019Member_071B290EEA4F86B71269CCC9A93A4ED3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_NotesPayable6.7PercentDue2019Member_071B290EEA4F86B71269CCC9A93A4ED3" xlink:to="lab_awr_NotesPayable6.7PercentDue2019Member_071B290EEA4F86B71269CCC9A93A4ED3" xlink:type="arc" />
    <link:label id="lab_awr_AccountingPoliciesLineItems_408CE10EB2516895F462CCC9A93BD04B_terseLabel_en-US" xlink:label="lab_awr_AccountingPoliciesLineItems_408CE10EB2516895F462CCC9A93BD04B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of significant accounting policies</link:label>
    <link:label id="lab_awr_AccountingPoliciesLineItems_408CE10EB2516895F462CCC9A93BD04B_label_en-US" xlink:label="lab_awr_AccountingPoliciesLineItems_408CE10EB2516895F462CCC9A93BD04B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounting Policies [Line Items]</link:label>
    <link:label id="lab_awr_AccountingPoliciesLineItems_408CE10EB2516895F462CCC9A93BD04B_documentation_en-US" xlink:label="lab_awr_AccountingPoliciesLineItems_408CE10EB2516895F462CCC9A93BD04B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_AccountingPoliciesLineItems" xlink:label="loc_awr_AccountingPoliciesLineItems_408CE10EB2516895F462CCC9A93BD04B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_AccountingPoliciesLineItems_408CE10EB2516895F462CCC9A93BD04B" xlink:to="lab_awr_AccountingPoliciesLineItems_408CE10EB2516895F462CCC9A93BD04B" xlink:type="arc" />
    <link:label id="lab_awr_NatureOfOperationsAbstract_8D15F5796725B69B274ECCC9A93B689F_terseLabel_en-US" xlink:label="lab_awr_NatureOfOperationsAbstract_8D15F5796725B69B274ECCC9A93B689F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nature of Operations:</link:label>
    <link:label id="lab_awr_NatureOfOperationsAbstract_8D15F5796725B69B274ECCC9A93B689F_label_en-US" xlink:label="lab_awr_NatureOfOperationsAbstract_8D15F5796725B69B274ECCC9A93B689F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nature of Operations [Abstract]</link:label>
    <link:label id="lab_awr_NatureOfOperationsAbstract_8D15F5796725B69B274ECCC9A93B689F_documentation_en-US" xlink:label="lab_awr_NatureOfOperationsAbstract_8D15F5796725B69B274ECCC9A93B689F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_NatureOfOperationsAbstract" xlink:label="loc_awr_NatureOfOperationsAbstract_8D15F5796725B69B274ECCC9A93B689F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_NatureOfOperationsAbstract_8D15F5796725B69B274ECCC9A93B689F" xlink:to="lab_awr_NatureOfOperationsAbstract_8D15F5796725B69B274ECCC9A93B689F" xlink:type="arc" />
    <link:label id="lab_awr_NumberOfCustomers_3A55A0CE933090251670CCC9A93B9EAD_terseLabel_en-US" xlink:label="lab_awr_NumberOfCustomers_3A55A0CE933090251670CCC9A93B9EAD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of customers</link:label>
    <link:label id="lab_awr_NumberOfCustomers_3A55A0CE933090251670CCC9A93B9EAD_label_en-US" xlink:label="lab_awr_NumberOfCustomers_3A55A0CE933090251670CCC9A93B9EAD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Customers</link:label>
    <link:label id="lab_awr_NumberOfCustomers_3A55A0CE933090251670CCC9A93B9EAD_documentation_en-US" xlink:label="lab_awr_NumberOfCustomers_3A55A0CE933090251670CCC9A93B9EAD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of customers who are served by the entity.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_NumberOfCustomers" xlink:label="loc_awr_NumberOfCustomers_3A55A0CE933090251670CCC9A93B9EAD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_NumberOfCustomers_3A55A0CE933090251670CCC9A93B9EAD" xlink:to="lab_awr_NumberOfCustomers_3A55A0CE933090251670CCC9A93B9EAD" xlink:type="arc" />
    <link:label id="lab_awr_BasisOfPresentationAbstract_751DD2D2ED3AD8E506C3CCC9A93CF24B_terseLabel_en-US" xlink:label="lab_awr_BasisOfPresentationAbstract_751DD2D2ED3AD8E506C3CCC9A93CF24B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basis of Presentation:</link:label>
    <link:label id="lab_awr_BasisOfPresentationAbstract_751DD2D2ED3AD8E506C3CCC9A93CF24B_label_en-US" xlink:label="lab_awr_BasisOfPresentationAbstract_751DD2D2ED3AD8E506C3CCC9A93CF24B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Basis of Presentation [Abstract]</link:label>
    <link:label id="lab_awr_BasisOfPresentationAbstract_751DD2D2ED3AD8E506C3CCC9A93CF24B_documentation_en-US" xlink:label="lab_awr_BasisOfPresentationAbstract_751DD2D2ED3AD8E506C3CCC9A93CF24B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_BasisOfPresentationAbstract" xlink:label="loc_awr_BasisOfPresentationAbstract_751DD2D2ED3AD8E506C3CCC9A93CF24B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_BasisOfPresentationAbstract_751DD2D2ED3AD8E506C3CCC9A93CF24B" xlink:to="lab_awr_BasisOfPresentationAbstract_751DD2D2ED3AD8E506C3CCC9A93CF24B" xlink:type="arc" />
    <link:label id="lab_awr_NumberOfRegistrantsFilingCombinedReport_C0797F52BEA5C15F33FFCCC9A93CDE88_terseLabel_en-US" xlink:label="lab_awr_NumberOfRegistrantsFilingCombinedReport_C0797F52BEA5C15F33FFCCC9A93CDE88" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of registrants filing combined report</link:label>
    <link:label id="lab_awr_NumberOfRegistrantsFilingCombinedReport_C0797F52BEA5C15F33FFCCC9A93CDE88_label_en-US" xlink:label="lab_awr_NumberOfRegistrantsFilingCombinedReport_C0797F52BEA5C15F33FFCCC9A93CDE88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Registrants Filing Combined Report</link:label>
    <link:label id="lab_awr_NumberOfRegistrantsFilingCombinedReport_C0797F52BEA5C15F33FFCCC9A93CDE88_documentation_en-US" xlink:label="lab_awr_NumberOfRegistrantsFilingCombinedReport_C0797F52BEA5C15F33FFCCC9A93CDE88" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of registrants filing combined report during the period.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_NumberOfRegistrantsFilingCombinedReport" xlink:label="loc_awr_NumberOfRegistrantsFilingCombinedReport_C0797F52BEA5C15F33FFCCC9A93CDE88" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_awr_NumberOfRegistrantsFilingCombinedReport_C0797F52BEA5C15F33FFCCC9A93CDE88" xlink:to="lab_awr_NumberOfRegistrantsFilingCombinedReport_C0797F52BEA5C15F33FFCCC9A93CDE88" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionsAbstract_37F98B1A02F517AF4821CCC9A93C818F_verboseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsAbstract_37F98B1A02F517AF4821CCC9A93C818F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Related Party Transactions</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionsAbstract_37F98B1A02F517AF4821CCC9A93C818F_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsAbstract_37F98B1A02F517AF4821CCC9A93C818F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transactions [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyTransactionsAbstract" xlink:label="loc_us-gaap_RelatedPartyTransactionsAbstract_37F98B1A02F517AF4821CCC9A93C818F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionsAbstract_37F98B1A02F517AF4821CCC9A93C818F" xlink:to="lab_us-gaap_RelatedPartyTransactionsAbstract_37F98B1A02F517AF4821CCC9A93C818F" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionAmountsOfTransaction_B87CCD950A1C47F53255CCC9A93DEE93_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionAmountsOfTransaction_B87CCD950A1C47F53255CCC9A93DEE93" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payments to affiliate for corporate office administrative and general costs</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionAmountsOfTransaction_B87CCD950A1C47F53255CCC9A93DEE93_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionAmountsOfTransaction_B87CCD950A1C47F53255CCC9A93DEE93" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transaction, Amounts of Transaction</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyTransactionAmountsOfTransaction" xlink:label="loc_us-gaap_RelatedPartyTransactionAmountsOfTransaction_B87CCD950A1C47F53255CCC9A93DEE93" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionAmountsOfTransaction_B87CCD950A1C47F53255CCC9A93DEE93" xlink:to="lab_us-gaap_RelatedPartyTransactionAmountsOfTransaction_B87CCD950A1C47F53255CCC9A93DEE93" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_DCD8C71CFCA6FE00A31DCCC9A93D073D_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_DCD8C71CFCA6FE00A31DCCC9A93D073D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum borrowing capacity on line of credit</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_DCD8C71CFCA6FE00A31DCCC9A93D073D_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_DCD8C71CFCA6FE00A31DCCC9A93D073D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_DCD8C71CFCA6FE00A31DCCC9A93D073D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_DCD8C71CFCA6FE00A31DCCC9A93D073D" xlink:to="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_DCD8C71CFCA6FE00A31DCCC9A93D073D" xlink:type="arc" />
    <link:label id="lab_us-gaap_NotesPayableToBankNoncurrent_EB4A9526C0A8B8959760CCC9A93D3B63_verboseLabel_en-US" xlink:label="lab_us-gaap_NotesPayableToBankNoncurrent_EB4A9526C0A8B8959760CCC9A93D3B63" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Notes payable to bank</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NotesPayableToBankNoncurrent" xlink:label="loc_us-gaap_NotesPayableToBankNoncurrent_EB4A9526C0A8B8959760CCC9A93D3B63" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NotesPayableToBankNoncurrent_EB4A9526C0A8B8959760CCC9A93D3B63" xlink:to="lab_us-gaap_NotesPayableToBankNoncurrent_EB4A9526C0A8B8959760CCC9A93D3B63" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtAndCapitalLeaseObligations_E316107ECB8240174FECCCC9A93DE5CA_terseLabel_en-US" xlink:label="lab_us-gaap_DebtAndCapitalLeaseObligations_E316107ECB8240174FECCCC9A93DE5CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notes outstanding</link:label>
    <link:label id="lab_us-gaap_DebtAndCapitalLeaseObligations_E316107ECB8240174FECCCC9A93DE5CA_label_en-US" xlink:label="lab_us-gaap_DebtAndCapitalLeaseObligations_E316107ECB8240174FECCCC9A93DE5CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt and Capital Lease Obligations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_DebtAndCapitalLeaseObligations_E316107ECB8240174FECCCC9A93DE5CA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtAndCapitalLeaseObligations_E316107ECB8240174FECCCC9A93DE5CA" xlink:to="lab_us-gaap_DebtAndCapitalLeaseObligations_E316107ECB8240174FECCCC9A93DE5CA" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_8C5A932F173DDEFE9723CCC9A93DDEAE_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_8C5A932F173DDEFE9723CCC9A93DDEAE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest rate</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_8C5A932F173DDEFE9723CCC9A93DDEAE_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_8C5A932F173DDEFE9723CCC9A93DDEAE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Interest Rate, Stated Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_8C5A932F173DDEFE9723CCC9A93DDEAE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_8C5A932F173DDEFE9723CCC9A93DDEAE" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_8C5A932F173DDEFE9723CCC9A93DDEAE" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_60E9E08EE26775B443E7CCC9A95C52A5_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_60E9E08EE26775B443E7CCC9A95C52A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_E55769A8544DF38FBF01CCC9A95E8A2C_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_E55769A8544DF38FBF01CCC9A95E8A2C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_E55769A8544DF38FBF01CCC9A95E8A2C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_E55769A8544DF38FBF01CCC9A95E8A2C" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_E55769A8544DF38FBF01CCC9A95E8A2C" xlink:type="arc" />
    <link:label id="lab_awr_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_1E94AA0B96FAF36FADDCCCC9A95F4DBE_terseLabel_en-US" xlink:label="lab_awr_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_1E94AA0B96FAF36FADDCCCC9A95F4DBE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustments to reconcile net income to net cash provided by operating activities:</link:label>
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    <link:loc xlink:href="awr-20180930.xsd#awr_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract" xlink:label="loc_awr_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_1E94AA0B96FAF36FADDCCCC9A95F4DBE" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DepreciationAndAmortization_C4CE8547E631874B9D75CCC9A95F36D3_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationAndAmortization_C4CE8547E631874B9D75CCC9A95F36D3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation and amortization</link:label>
    <link:label id="lab_us-gaap_DepreciationAndAmortization_C4CE8547E631874B9D75CCC9A95F36D3_label_en-US" xlink:label="lab_us-gaap_DepreciationAndAmortization_C4CE8547E631874B9D75CCC9A95F36D3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation, Depletion and Amortization, Nonproduction</link:label>
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    <link:label id="lab_us-gaap_ProvisionForDoubtfulAccounts_666C5F3175CC8574340DCCC9A95F8ECB_terseLabel_en-US" xlink:label="lab_us-gaap_ProvisionForDoubtfulAccounts_666C5F3175CC8574340DCCC9A95F8ECB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision for doubtful accounts</link:label>
    <link:label id="lab_us-gaap_ProvisionForDoubtfulAccounts_666C5F3175CC8574340DCCC9A95F8ECB_label_en-US" xlink:label="lab_us-gaap_ProvisionForDoubtfulAccounts_666C5F3175CC8574340DCCC9A95F8ECB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provision for Doubtful Accounts</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_666C5F3175CC8574340DCCC9A95F8ECB" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_DF258BFB8D256397C8E6CCC9A95F4B1D_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_DF258BFB8D256397C8E6CCC9A95F4B1D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred income taxes and investment tax credits</link:label>
    <link:label id="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_DF258BFB8D256397C8E6CCC9A95F4B1D_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_DF258BFB8D256397C8E6CCC9A95F4B1D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Income Taxes and Tax Credits</link:label>
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    <link:label id="lab_us-gaap_ShareBasedCompensation_4C089FEE63891DE900A9CCC9A960E74C_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_4C089FEE63891DE900A9CCC9A960E74C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation expense</link:label>
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    <link:label id="lab_us-gaap_OtherNoncashIncomeExpense_2EB5668F1EBCCD9BEE95CCC9A961CD4C_negatedLabel_en-US" xlink:label="lab_us-gaap_OtherNoncashIncomeExpense_2EB5668F1EBCCD9BEE95CCC9A961CD4C" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Other &#8212; net</link:label>
    <link:label id="lab_us-gaap_OtherNoncashIncomeExpense_2EB5668F1EBCCD9BEE95CCC9A961CD4C_label_en-US" xlink:label="lab_us-gaap_OtherNoncashIncomeExpense_2EB5668F1EBCCD9BEE95CCC9A961CD4C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Noncash Income (Expense)</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_D3C284E8A2BD38CA4B4ECCC9A9621345" xlink:to="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_D3C284E8A2BD38CA4B4ECCC9A9621345" xlink:type="arc" />
    <link:label id="lab_awr_IncreaseDecreaseinContractAssets_AD1CBFF2BAE51C81C70ACCC9A962136F_negatedTerseLabel_en-US" xlink:label="lab_awr_IncreaseDecreaseinContractAssets_AD1CBFF2BAE51C81C70ACCC9A962136F" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Increase(Decrease) in Contract Assets</link:label>
    <link:label id="lab_awr_IncreaseDecreaseinContractAssets_AD1CBFF2BAE51C81C70ACCC9A962136F_label_en-US" xlink:label="lab_awr_IncreaseDecreaseinContractAssets_AD1CBFF2BAE51C81C70ACCC9A962136F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase(Decrease) in Contract Assets</link:label>
    <link:label id="lab_awr_IncreaseDecreaseinContractAssets_AD1CBFF2BAE51C81C70ACCC9A962136F_documentation_en-US" xlink:label="lab_awr_IncreaseDecreaseinContractAssets_AD1CBFF2BAE51C81C70ACCC9A962136F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The net change during the reporting period in contact assets</link:label>
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    <link:label id="lab_us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities_47AC5D354E5BFD40448ECCC9A9639ADB_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities_47AC5D354E5BFD40448ECCC9A9639ADB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Regulatory assets</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities_47AC5D354E5BFD40448ECCC9A9639ADB" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_F7791251F947DE00D2C8CCC9A963684E_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_F7791251F947DE00D2C8CCC9A963684E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_F7791251F947DE00D2C8CCC9A963684E" xlink:type="locator" />
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    <link:label id="lab_awr_IncreaseDecreaseInRelatedPartyReceivablePayableCurrent_87FDF9E391EB94733E8ACCC9A9635BE2_terseLabel_en-US" xlink:label="lab_awr_IncreaseDecreaseInRelatedPartyReceivablePayableCurrent_87FDF9E391EB94733E8ACCC9A9635BE2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intercompany receivable/payable</link:label>
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    <link:loc xlink:href="awr-20180930.xsd#awr_IncreaseDecreaseInRelatedPartyReceivablePayableCurrent" xlink:label="loc_awr_IncreaseDecreaseInRelatedPartyReceivablePayableCurrent_87FDF9E391EB94733E8ACCC9A9635BE2" xlink:type="locator" />
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    <link:label id="lab_awr_IncreaseDecreaseInReceivablePayableFromRelatedPartiesIncomeTaxes_A32972F5F7D63870F6FACCC9A963C466_terseLabel_en-US" xlink:label="lab_awr_IncreaseDecreaseInReceivablePayableFromRelatedPartiesIncomeTaxes_A32972F5F7D63870F6FACCC9A963C466" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income taxes receivable/payable from/to Parent</link:label>
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    <link:label id="lab_awr_IncreaseDecreaseInReceivablePayableFromRelatedPartiesIncomeTaxes_A32972F5F7D63870F6FACCC9A963C466_documentation_en-US" xlink:label="lab_awr_IncreaseDecreaseInReceivablePayableFromRelatedPartiesIncomeTaxes_A32972F5F7D63870F6FACCC9A963C466" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The increase (decrease) during the reporting period in the amounts payable to/receivable from affiliated parties for income taxes</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_IncreaseDecreaseInReceivablePayableFromRelatedPartiesIncomeTaxes" xlink:label="loc_awr_IncreaseDecreaseInReceivablePayableFromRelatedPartiesIncomeTaxes_A32972F5F7D63870F6FACCC9A963C466" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInIncomeTaxes_9D953D48940DF7FCD2C0CCC9A9643C41_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInIncomeTaxes_9D953D48940DF7FCD2C0CCC9A9643C41" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income taxes receivable/payable</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInIncomeTaxes" xlink:label="loc_us-gaap_IncreaseDecreaseInIncomeTaxes_9D953D48940DF7FCD2C0CCC9A9643C41" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings_CFBBE946C4628D69796ECCC9A96420DF_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings_CFBBE946C4628D69796ECCC9A96420DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract liabilities / Billings in excess of costs and estimated earnings on contracts</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings" xlink:label="loc_us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings_CFBBE946C4628D69796ECCC9A96420DF" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_A2564E0E6A6D69860516CCC9A964E313_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_A2564E0E6A6D69860516CCC9A964E313" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued pension and other post-retirement benefits</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations" xlink:label="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_A2564E0E6A6D69860516CCC9A964E313" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_6BEEC35BB73A2D6F1354CCC9A964DF13_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_6BEEC35BB73A2D6F1354CCC9A964DF13" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other liabilities</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_6BEEC35BB73A2D6F1354CCC9A964DF13_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_6BEEC35BB73A2D6F1354CCC9A964DF13" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Other Operating Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_6BEEC35BB73A2D6F1354CCC9A964DF13" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_AA8CF248642BC129870DCCC9A9657D1C_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_AA8CF248642BC129870DCCC9A9657D1C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash Flows From Investing Activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_AA8CF248642BC129870DCCC9A9657D1C_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_AA8CF248642BC129870DCCC9A9657D1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_AA8CF248642BC129870DCCC9A9657D1C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_AA8CF248642BC129870DCCC9A9657D1C" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_AA8CF248642BC129870DCCC9A9657D1C" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_AA51E916E3DA110B35C9CCC9A96576E2_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_AA51E916E3DA110B35C9CCC9A96576E2" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Capital expenditures</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_AA51E916E3DA110B35C9CCC9A96576E2_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_AA51E916E3DA110B35C9CCC9A96576E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Property, Plant, and Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_AA51E916E3DA110B35C9CCC9A96576E2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_AA51E916E3DA110B35C9CCC9A96576E2" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_AA51E916E3DA110B35C9CCC9A96576E2" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_5952C93DAC9DDF5ABF47CCC9A965D83C_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_5952C93DAC9DDF5ABF47CCC9A965D83C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from sale of assets</link:label>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_5952C93DAC9DDF5ABF47CCC9A965D83C_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_5952C93DAC9DDF5ABF47CCC9A965D83C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale of Property, Plant, and Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_5952C93DAC9DDF5ABF47CCC9A965D83C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_5952C93DAC9DDF5ABF47CCC9A965D83C" xlink:to="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_5952C93DAC9DDF5ABF47CCC9A965D83C" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_ADCE02D4F35019816F55CCC9A9654F7A_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_ADCE02D4F35019816F55CCC9A9654F7A" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Other investing activities</link:label>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_ADCE02D4F35019816F55CCC9A9654F7A_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_ADCE02D4F35019816F55CCC9A9654F7A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Other Investing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_ADCE02D4F35019816F55CCC9A9654F7A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_ADCE02D4F35019816F55CCC9A9654F7A" xlink:to="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_ADCE02D4F35019816F55CCC9A9654F7A" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_1D868B77B62FC1857C54CCC9A9654614_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_1D868B77B62FC1857C54CCC9A9654614" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_1D868B77B62FC1857C54CCC9A9654614_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_1D868B77B62FC1857C54CCC9A9654614" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities, Continuing Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_1D868B77B62FC1857C54CCC9A9654614" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_1D868B77B62FC1857C54CCC9A9654614" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_1D868B77B62FC1857C54CCC9A9654614" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_D27DDCDF58D99C29C908CCC9A9664178_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_D27DDCDF58D99C29C908CCC9A9664178" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash Flows From Financing Activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_D27DDCDF58D99C29C908CCC9A9664178_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_D27DDCDF58D99C29C908CCC9A9664178" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_D27DDCDF58D99C29C908CCC9A9664178" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_D27DDCDF58D99C29C908CCC9A9664178" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_D27DDCDF58D99C29C908CCC9A9664178" xlink:type="arc" />
    <link:label id="lab_awr_ProceedsFromIssuanceOfCommonSharesAndStockOptionExercises_CB712CC61CF3BC8C0968CCC9A966EB6E_terseLabel_en-US" xlink:label="lab_awr_ProceedsFromIssuanceOfCommonSharesAndStockOptionExercises_CB712CC61CF3BC8C0968CCC9A966EB6E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from stock option exercises</link:label>
    <link:label id="lab_awr_ProceedsFromIssuanceOfCommonSharesAndStockOptionExercises_CB712CC61CF3BC8C0968CCC9A966EB6E_label_en-US" xlink:label="lab_awr_ProceedsFromIssuanceOfCommonSharesAndStockOptionExercises_CB712CC61CF3BC8C0968CCC9A966EB6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Common Shares and Stock Option Exercises</link:label>
    <link:label id="lab_awr_ProceedsFromIssuanceOfCommonSharesAndStockOptionExercises_CB712CC61CF3BC8C0968CCC9A966EB6E_documentation_en-US" xlink:label="lab_awr_ProceedsFromIssuanceOfCommonSharesAndStockOptionExercises_CB712CC61CF3BC8C0968CCC9A966EB6E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The cash inflow from the additional capital contribution to the entity and amount received from holders exercising their stock options.</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromContributionInAidOfConstruction_B65BC1949C5B421C3C00CCC9A96698E1_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromContributionInAidOfConstruction_B65BC1949C5B421C3C00CCC9A96698E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receipt of advances for and contributions in aid of construction</link:label>
    <link:label id="lab_us-gaap_ProceedsFromContributionInAidOfConstruction_B65BC1949C5B421C3C00CCC9A96698E1_label_en-US" xlink:label="lab_us-gaap_ProceedsFromContributionInAidOfConstruction_B65BC1949C5B421C3C00CCC9A96698E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Contribution in Aid of Construction</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromContributionInAidOfConstruction" xlink:label="loc_us-gaap_ProceedsFromContributionInAidOfConstruction_B65BC1949C5B421C3C00CCC9A96698E1" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RepaymentsOfAdvancesForConstruction_D4D2177293E4E1C451E0CCC9A967A78A_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfAdvancesForConstruction_D4D2177293E4E1C451E0CCC9A967A78A" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Refunds on advances for construction</link:label>
    <link:label id="lab_us-gaap_RepaymentsOfAdvancesForConstruction_D4D2177293E4E1C451E0CCC9A967A78A_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfAdvancesForConstruction_D4D2177293E4E1C451E0CCC9A967A78A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Advances for Construction</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RepaymentsOfAdvancesForConstruction" xlink:label="loc_us-gaap_RepaymentsOfAdvancesForConstruction_D4D2177293E4E1C451E0CCC9A967A78A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_2E2A361B3897621F7179CCC9A9676398_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_2E2A361B3897621F7179CCC9A9676398" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Retirement or repayments of long-term debt</link:label>
    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_2E2A361B3897621F7179CCC9A9676398_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_2E2A361B3897621F7179CCC9A9676398" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Long-term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_2E2A361B3897621F7179CCC9A9676398" xlink:type="locator" />
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    <link:label id="lab_awr_PaymentsForProceedsFromRelatedPartyDebt_F2DE969C207FED75DC40CCC9A96795DA_terseLabel_en-US" xlink:label="lab_awr_PaymentsForProceedsFromRelatedPartyDebt_F2DE969C207FED75DC40CCC9A96795DA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net change in intercompany borrowings</link:label>
    <link:label id="lab_awr_PaymentsForProceedsFromRelatedPartyDebt_F2DE969C207FED75DC40CCC9A96795DA_label_en-US" xlink:label="lab_awr_PaymentsForProceedsFromRelatedPartyDebt_F2DE969C207FED75DC40CCC9A96795DA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for Proceeds from Related Party Debt</link:label>
    <link:label id="lab_awr_PaymentsForProceedsFromRelatedPartyDebt_F2DE969C207FED75DC40CCC9A96795DA_documentation_en-US" xlink:label="lab_awr_PaymentsForProceedsFromRelatedPartyDebt_F2DE969C207FED75DC40CCC9A96795DA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the net change during the reporting period in amount of payments for proceeds from related party debt.</link:label>
    <link:loc xlink:href="awr-20180930.xsd#awr_PaymentsForProceedsFromRelatedPartyDebt" xlink:label="loc_awr_PaymentsForProceedsFromRelatedPartyDebt_F2DE969C207FED75DC40CCC9A96795DA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInNotesPayableCurrent_8D8015C77680AA7946A7CCC9A96744A7_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInNotesPayableCurrent_8D8015C77680AA7946A7CCC9A96744A7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net change in notes payable to banks</link:label>
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    <link:label id="lab_us-gaap_PaymentsOfDividends_55C706A29BAA43710A18CCC9A967D524_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividends_55C706A29BAA43710A18CCC9A967D524" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Dividends paid</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_7FDBFC91697D93910B67CCC9A9683064_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_7FDBFC91697D93910B67CCC9A9683064" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other financing activities</link:label>
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