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        <ContributionControllerInd>0</ContributionControllerInd>
        <ContributionFamilyInd>0</ContributionFamilyInd>
        <Contribution35ControlledInd>0</Contribution35ControlledInd>
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    <IRS990ScheduleD documentId="RetDoc1040000001">
      <TotalBookValueLandBuildingsAmt>0</TotalBookValueLandBuildingsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>DUE TO AFFILIATES</Desc>
        <Amt>66293</Amt>
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      <TotalLiabilityAmt>66293</TotalLiabilityAmt>
      <TotalRevEtcAuditedFinclStmtAmt>669218</TotalRevEtcAuditedFinclStmtAmt>
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      <RevenueSubtotalAmt>669218</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>669218</TotalRevenuePerForm990Amt>
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      <TotalExpensesPerForm990Amt>588700</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SUPPLEMENTAL FINANCIAL INFORMATION</FormAndLineReferenceDesc>
        <ExplanationTxt>INTENDEND USES OF ENDOWMENT FUND - NET ASSETS WITH DONOR RESTRICTIONS (FORMERLY, PERMANENTLY RESTRICTED NET ASSETS) CONSISTS OF $1,200,000 FOR THE BENEFIT OF THE METROPOLITAN WATERWORKS MUSEUM, INC. IN ACCORDANCE WITH THE PROVISION OF THE LDA AUTHORIZED BY THE STATE OF MASSACHUSETTS DIVISION OF CAPITAL AND ASSET MANAGEMENT ("DCAM").</ExplanationTxt>
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    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>FINAL RETURNS ARE REVIEWED BY THE BOARD OF DIRECTORS PRIOR TO FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL BOARD MEMBERS ARE REQUIRED TO SIGN A CONFLICT OF INTEREST STATEMENT WHICH IS REGULARLY REVIEWED AND MONITORED AT LEAST ON AN ANNUAL BASIS AND/OR WHEN NECESSARY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS ARE AVAILABLE UPON REQUEST.</ExplanationTxt>
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          <BusinessNameLine1Txt>METROPOLITAN WATERWORKS MUSEUM INC</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>2450 BEACON STREET</AddressLine1Txt>
          <CityNm>CHESTNUT HILL</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02467</ZIPCd>
        </USAddress>
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        <PrimaryActivitiesTxt>MWM</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
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      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
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      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>0</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>0</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>1</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>1</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>METROPOLITIAN WATERWORKS MUSEUM IN</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>R</TransactionTypeTxt>
        <InvolvedAmt>561110</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>FMV</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
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</Return>