<SEC-DOCUMENT>0001144204-13-016463.txt : 20130320
<SEC-HEADER>0001144204-13-016463.hdr.sgml : 20130320
<ACCEPTANCE-DATETIME>20130320171427
ACCESSION NUMBER:		0001144204-13-016463
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20130318
FILED AS OF DATE:		20130320
DATE AS OF CHANGE:		20130320

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			McTaggart Gregory S.
		CENTRAL INDEX KEY:			0001566374

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-25248
		FILM NUMBER:		13705695

	MAIL ADDRESS:	
		STREET 1:		PO BOX 30984
		CITY:			GRAND CAYMAN
		STATE:			E9
		ZIP:			KY1-1204

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CONSOLIDATED WATER CO LTD
		CENTRAL INDEX KEY:			0000928340
		STANDARD INDUSTRIAL CLASSIFICATION:	WATER SUPPLY [4941]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			E6
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		TRAFALGAR PL
		STREET 2:		WEST BAY RD
		CITY:			GRAND CAYMAN BWI CAY
		STATE:			E9
		ZIP:			00000
		BUSINESS PHONE:		8099474277

	MAIL ADDRESS:	
		STREET 1:		TRAFALGAR PLACE, WEST BAY ROAD, P.O. BOX
		STREET 2:		GRAND CAYMAN, CAYMAN ISLANDS, BWI

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CAYMAN WATER CO LTD
		DATE OF NAME CHANGE:	19941212
</SEC-HEADER>
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<SEQUENCE>1
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<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
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    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2013-03-18</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000928340</issuerCik>
        <issuerName>CONSOLIDATED WATER CO LTD</issuerName>
        <issuerTradingSymbol>CWCO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001566374</rptOwnerCik>
            <rptOwnerName>McTaggart Gregory S.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>PO BOX 1114</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>GRAND CAYMAN</rptOwnerCity>
            <rptOwnerState>E9</rptOwnerState>
            <rptOwnerZipCode>KY1-1102</rptOwnerZipCode>
            <rptOwnerStateDescription>CAYMAN ISLANDS</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP OF CAYMAN OPERATIONS</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3135</value>
                </transactionShares>
                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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                </transactionShares>
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                </transactionPricePerShare>
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                </sharesOwnedFollowingTransaction>
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        </nonDerivativeTransaction>
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    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>OPTION (RIGHT TO BUY)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>7.90</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2013-03-18</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
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            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3135</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2010-03-19</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2015-03-19</value>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>COMMON STOCK</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>13305</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>10170</value>
                </sharesOwnedFollowingTransaction>
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            </securityTitle>
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            </conversionOrExercisePrice>
            <transactionDate>
                <value>2013-03-19</value>
            </transactionDate>
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                    <value>1300</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2010-03-19</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2015-03-19</value>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
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                </underlyingSecurityTitle>
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                <sharesOwnedFollowingTransaction>
                    <value>8870</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The option vested as to 4,435 shares on each of March 19, 2010, March 19, 2011 and March 19, 2012. If not previously exercised, the option expires as to 4,435 shares on each of March 19, 2013, March 19, 2014 and March 19, 2015. The exercise price of the option equals the market price of the Company's common stock as of the close of business on the date of grant.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Gregory S. McTaggart</signatureName>
        <signatureDate>2013-03-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
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</SEC-DOCUMENT>
