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        <EOYAmt>723448</EOYAmt>
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      <LandBldgEquipAccumDeprecAmt>15006149</LandBldgEquipAccumDeprecAmt>
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      <InvestmentsPubTradedSecGrp>
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        <EOYAmt>3585307</EOYAmt>
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        <EOYAmt>4651638</EOYAmt>
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        <EOYAmt>571341</EOYAmt>
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      <TotalLiabilitiesGrp>
        <BOYAmt>6343906</BOYAmt>
        <EOYAmt>5778827</EOYAmt>
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      <OrgDoesNotFollowSFAS117Ind>X</OrgDoesNotFollowSFAS117Ind>
      <CapStkTrPrinCurrentFundsGrp>
        <BOYAmt>26557619</BOYAmt>
        <EOYAmt>29019449</EOYAmt>
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      <PdInCapSrplsLandBldgEqpFundGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
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      <RtnEarnEndowmentIncmOthFndsGrp>
        <BOYAmt>-503393</BOYAmt>
        <EOYAmt>278314</EOYAmt>
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      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>26054226</BOYAmt>
        <EOYAmt>29297763</EOYAmt>
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      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>32398132</BOYAmt>
        <EOYAmt>35076590</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <InfoInScheduleOPartXIInd>X</InfoInScheduleOPartXIInd>
      <ReconcilationRevenueExpnssAmt>311979</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>165838</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>2765720</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <LandGrp>
        <OtherCostOrOtherBasisAmt>867607</OtherCostOrOtherBasisAmt>
        <BookValueAmt>867607</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <OtherCostOrOtherBasisAmt>2927757</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>893352</DepreciationAmt>
        <BookValueAmt>2034405</BookValueAmt>
      </BuildingsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>4254265</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>2488754</DepreciationAmt>
        <BookValueAmt>1765511</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>23108640</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>11624043</DepreciationAmt>
        <BookValueAmt>11484597</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>16152120</TotalBookValueLandBuildingsAmt>
      <OtherAssetsOrgGrp>
        <Desc>CONSTRUCTION IN PROGRESS</Desc>
        <BookValueAmt>752450</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>Source development &amp; rate/share charge study costs</Desc>
        <BookValueAmt>23369</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>WHOLESALE WATER AGREEMENT</Desc>
        <BookValueAmt>3931620</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>Water Rights</Desc>
        <BookValueAmt>106554</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>prepaid water system plan</Desc>
        <BookValueAmt>56577</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>Easements</Desc>
        <BookValueAmt>6788</BookValueAmt>
      </OtherAssetsOrgGrp>
      <TotalBookValueOtherAssetsAmt>4877358</TotalBookValueOtherAssetsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>DEVELOPER DEPOSITS</Desc>
        <Amt>571341</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>571341</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>5362118</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>165838</NetUnrealizedGainsInvstAmt>
      <OtherRevenueAmt>13301</OtherRevenueAmt>
      <RevenueNotReportedAmt>179139</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>5182979</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>5182979</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>4580411</TotExpnsEtcAuditedFinclStmtAmt>
      <OtherExpensesIncludedAmt>13301</OtherExpensesIncludedAmt>
      <ExpensesNotReportedAmt>13301</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>4567110</ExpensesSubtotalAmt>
      <OtherExpensesNotIncludedAmt>303890</OtherExpensesNotIncludedAmt>
      <ExpensesNotRptFinclStmtAmt>303890</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>4871000</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part X, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>The Mutual is exempt from income taxes under the provisions of Section 501(c)(12) of the Internal Revenue Code, except to the extent of unrelated business income, if any. The Mutual has adopted Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) 740-10 relating to accounting for uncertain tax positions. As of March 31, 2017 and 2016, the Mutual does not have any uncertain tax positions.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XI, Line 2d - Other Adjustments:</FormAndLineReferenceDesc>
        <ExplanationTxt>RENTAL EXPENSES NETTED WITH REVENUE ON FORM 990 13,301.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XII, Line 2d - Other Adjustments:</FormAndLineReferenceDesc>
        <ExplanationTxt>RENTAL EXPENSES NETTED WITH REVENUE ON FORM 990 13,301.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XII, Line 4b - Other Adjustments:</FormAndLineReferenceDesc>
        <ExplanationTxt>AMORTIZATION OF CONTRIBUTIONS IN AID OF CONSTRUCTION 303,890.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>LARRY JONES</PersonNm>
        <TitleTxt>General Manager</TitleTxt>
        <BaseCompensationFilingOrgAmt>124790</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>18449</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>16503</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>159742</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL MEMBERS ARE OF A SINGLE CLASS: PERSONS OR ENTITIES OWNING REAL PROPERTY WITHIN THE SERVICE AREA OF THE CORPORATION AND REQUIRING POTABLE WATER.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL MEMBERS ARE OF A SINGLE CLASS, WITH THE RIGHT TO ELECT MEMBERS OF THE GOVERNING BODY AND RECEIVE A SHARE OF SURPLUS EARNINGS OR GAINS ON SALES OF ASSETS UPON DISSOLUTION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FINANCE DIRECTOR AND GENERAL MANAGER REVIEW THE RETURN PRIOR TO PASSING IT TO THE BOARD OF TRUSTEES FOR THEIR REVIEW PRIOR TO THE FILING OF THE FORM 990.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION IS SET VIA AN INDUSTRY SURVEY OF COMPENSATION. SALARY SCHEDULES FOR ALL EMPLOYEES ARE REVIEWED AND APPROVED BY THE BOARD OF TRUSTEES. SUCH APPROVAL IS DELIBERATED AT BOARD MEETINGS FOR WHICH MINUTES ARE KEPT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FINANCIAL STATEMENTS AND CONFLICT OF INTEREST POLICY ARE BOTH MADE AVAILABLE TO THE PUBLIC UPON REQUEST. GOVERNING DOCUMENTS ARE MAILED TO NEW MEMBERS IN AN INFORMATIONAL PACKET WHICH INCLUDES THE COMPANY BYLAWS. THESE DOCUMENTS ARE ALSO AVAILABLE UPON REQUEST AND ON THE COMPANY WEBSITE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, line 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>AMORTIZATION OF CONTRIBUTIONS IN AID OF CONSTRUCTION 303,890. CHANGE IN MEMBERSHIPS 2,461,830.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>