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v3.21.2

Income Taxes: (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Effective income tax rate |  |  |  |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  |  | 21.00% |
Golden State Water Company |  |  |  |
Effective income tax rate |  |  |  |
ETRs ( as a percent) | 26.00% | 26.70% | 24.00% | 25.50%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% | 21.00% | 21.00% |
Parent [Member] |  |  |  |
Effective income tax rate |  |  |  |
ETRs ( as a percent) | 26.00% | 25.40% | 23.90% | 24.30%

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