﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2023v6.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2025-08-14T15:47:14-05:00</ReturnTs>
    <TaxPeriodEndDt>2024-09-30</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>550756523</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>Harris Hardin &amp; Company AC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>404 Ninth Street - Suite 201</AddressLine1Txt>
        <CityNm>Huntington</CityNm>
        <StateAbbreviationCd>WV</StateAbbreviationCd>
        <ZIPCd>25701</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-10-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>556035214</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>Plumbers Local 521 Health &amp; Welfare Fund</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>PLUM</BusinessNameControlTxt>
      <PhoneNum>3045250331</PhoneNum>
      <USAddress>
        <AddressLine1Txt>9200 U S Route 60</AddressLine1Txt>
        <CityNm>Ona</CityNm>
        <StateAbbreviationCd>WV</StateAbbreviationCd>
        <ZIPCd>25545</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>George A Kisor</PersonNm>
      <PersonTitleTxt>Trustee</PersonTitleTxt>
      <PhoneNum>3045250331</PhoneNum>
      <SignatureDt>2025-08-14</SignatureDt>
      <DiscussWithPaidPreparerInd>1</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>0</IRSResponsiblePrtyInfoCurrInd>
    <Form8822BAttachedInd>X</Form8822BAttachedInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>Steven P Hardin</PreparerPersonNm>
      <PTIN>P00241090</PTIN>
      <PhoneNum>3046975720</PhoneNum>
    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="5">
    <IRS990 documentId="RetDoc1038000001" referenceDocumentId="RetDoc1044400001">
      <AddressChangeInd>X</AddressChangeInd>
      <PrincipalOfficerNm>George A Kisor</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>137 Fifth Avenue</AddressLine1Txt>
        <CityNm>Huntington</CityNm>
        <StateAbbreviationCd>WV</StateAbbreviationCd>
        <ZIPCd>25701</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>3537176</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>0</GroupReturnForAffiliatesInd>
      <Organization501cInd organization501cTypeTxt="9">X</Organization501cInd>
      <WebsiteAddressTxt>None</WebsiteAddressTxt>
      <TypeOfOrganizationTrustInd>X</TypeOfOrganizationTrustInd>
      <FormationYr>1964</FormationYr>
      <LegalDomicileStateCd>WV</LegalDomicileStateCd>
      <ActivityOrMissionDesc>Provide health and welfare benefits to eligible participants.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>6</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>4</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <TotalVolunteersCnt>0</TotalVolunteersCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <NetUnrelatedBusTxblIncmAmt>0</NetUnrelatedBusTxblIncmAmt>
      <PYContributionsGrantsAmt>0</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>0</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>2761539</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>3189687</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>97648</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>92266</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>0</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>5273</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>2859187</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>3287226</CYTotalRevenueAmt>
      <PYGrantsAndSimilarPaidAmt>0</PYGrantsAndSimilarPaidAmt>
      <CYGrantsAndSimilarPaidAmt>0</CYGrantsAndSimilarPaidAmt>
      <PYBenefitsPaidToMembersAmt>2517412</PYBenefitsPaidToMembersAmt>
      <CYBenefitsPaidToMembersAmt>2164157</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>0</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>0</CYSalariesCompEmpBnftPaidAmt>
      <PYTotalProfFndrsngExpnsAmt>0</PYTotalProfFndrsngExpnsAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>0</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>338684</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>313439</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>2856096</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>2477596</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>3091</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>809630</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>3096254</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>4221329</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>14253</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>68010</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>3082001</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>4153319</NetAssetsOrFundBalancesEOYAmt>
      <MissionDesc>The purpose of the Trust Fund is to receive, preserve and invest contributions made by the employers as required by collective bargaining agreements, as well as direct employee payments, and to provide health and welfare beneftis for eligible participants.</MissionDesc>
      <SignificantNewProgramSrvcInd>0</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>0</SignificantChangeInd>
      <ExpenseAmt>2401212</ExpenseAmt>
      <Desc>Area-wide, union-negotiated, union/managment trusteed health &amp; welfare fund.</Desc>
      <TotalProgramServiceExpensesAmt>2401212</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind>0</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd>0</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>0</PoliticalCampaignActyInd>
      <SubjectToProxyTaxInd>0</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd referenceDocumentId="RetDoc1040000001">0</DonorAdvisedFundInd>
      <ConservationEasementsInd referenceDocumentId="RetDoc1040000001">0</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="RetDoc1040000001">0</CollectionsOfArtInd>
      <CreditCounselingInd referenceDocumentId="RetDoc1040000001">0</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd>0</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="RetDoc1040000001">0</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd referenceDocumentId="RetDoc1040000001">0</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="RetDoc1040000001">0</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd referenceDocumentId="RetDoc1040000001">0</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="RetDoc1040000001">0</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="RetDoc1040000001">1</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="RetDoc1040000001">1</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="RetDoc1040000001">0</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <ForeignActivitiesInd>0</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>0</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>0</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>0</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>0</FundraisingActivitiesInd>
      <GamingActivitiesInd>0</GamingActivitiesInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <GrantsToOrganizationsInd>0</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd>0</GrantsToIndividualsInd>
      <ScheduleJRequiredInd referenceDocumentId="RetDoc1042400001">1</ScheduleJRequiredInd>
      <TaxExemptBondsInd>0</TaxExemptBondsInd>
      <LoanOutstandingInd>0</LoanOutstandingInd>
      <GrantToRelatedPersonInd>0</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>0</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>0</BusinessRlnWithFamMemInd>
      <BusinessRlnWith35CtrlEntInd>0</BusinessRlnWith35CtrlEntInd>
      <DeductibleNonCashContriInd>0</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>0</DeductibleArtContributionInd>
      <TerminateOperationsInd>0</TerminateOperationsInd>
      <PartialLiquidationInd>0</PartialLiquidationInd>
      <DisregardedEntityInd referenceDocumentId="RetDoc1043400001">0</DisregardedEntityInd>
      <RelatedEntityInd referenceDocumentId="RetDoc1043400001">1</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <ActivitiesConductedPrtshpInd referenceDocumentId="RetDoc1043400001">0</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>1</ScheduleORequiredInd>
      <IRPDocumentCnt>3</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <BackupWthldComplianceInd>1</BackupWthldComplianceInd>
      <EmployeeCnt>0</EmployeeCnt>
      <UnrelatedBusIncmOverLimitInd>0</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>0</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>0</NondeductibleContributionsInd>
      <QuidProQuoContributionsInd>0</QuidProQuoContributionsInd>
      <Form8282PropertyDisposedOfInd>0</Form8282PropertyDisposedOfInd>
      <IndoorTanningServicesInd>0</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>0</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>0</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>6</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>4</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>0</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>0</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>0</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>0</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>0</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>1</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>0</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>1</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>1</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>0</OfficerMailingAddressInd>
      <LocalChaptersInd>0</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>0</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>1</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>1</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>1</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>1</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>1</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>0</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>0</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>0</InvestmentInJointVentureInd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <BusinessName>
          <BusinessNameLine1Txt>American Benefit Corporation</BusinessNameLine1Txt>
        </BusinessName>
        <PhoneNum>3045250331</PhoneNum>
        <USAddress>
          <AddressLine1Txt>9200 U S Route 60</AddressLine1Txt>
          <CityNm>Ona</CityNm>
          <StateAbbreviationCd>WV</StateAbbreviationCd>
          <ZIPCd>25545</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <Form990PartVIISectionAGrp>
        <PersonNm>George A Kisor</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>92706</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>81605</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Scott Knipp</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>3526</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>1565</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Frank R Ferguson</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>James L Johnson</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Jackie Wilson</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Phillip S Johnson</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>0</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>96232</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>83170</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>0</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <CntrctRcvdGreaterThan100KCnt>0</CntrctRcvdGreaterThan100KCnt>
      <ProgramServiceRevenueGrp>
        <Desc>Employer Contributions</Desc>
        <BusinessCd>525100</BusinessCd>
        <TotalRevenueColumnAmt>2879531</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>2879531</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Member Self-Payments</Desc>
        <BusinessCd>525100</BusinessCd>
        <TotalRevenueColumnAmt>310156</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>310156</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>3189687</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>92216</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>92216</RelatedOrExemptFuncIncomeAmt>
      </InvestmentIncomeGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>250000</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>249950</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>50</SecuritiesAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>50</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>50</RelatedOrExemptFuncIncomeAmt>
      </NetGainOrLossInvestmentsGrp>
      <OtherRevenueMiscGrp>
        <Desc>Refunds and Credits</Desc>
        <BusinessCd>525100</BusinessCd>
        <TotalRevenueColumnAmt>5273</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>5273</RelatedOrExemptFuncIncomeAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>5273</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>3287226</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>3287226</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </TotalRevenueGrp>
      <BenefitsToMembersGrp>
        <TotalAmt>2164157</TotalAmt>
        <ProgramServicesAmt>2164157</ProgramServicesAmt>
      </BenefitsToMembersGrp>
      <FeesForServicesManagementGrp>
        <TotalAmt>122084</TotalAmt>
        <ProgramServicesAmt>97677</ProgramServicesAmt>
        <ManagementAndGeneralAmt>24407</ManagementAndGeneralAmt>
      </FeesForServicesManagementGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>4426</TotalAmt>
        <ManagementAndGeneralAmt>4426</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>15832</TotalAmt>
        <ManagementAndGeneralAmt>15832</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>9525</TotalAmt>
        <ManagementAndGeneralAmt>9525</ManagementAndGeneralAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>150554</TotalAmt>
        <ProgramServicesAmt>138354</ProgramServicesAmt>
        <ManagementAndGeneralAmt>12200</ManagementAndGeneralAmt>
      </FeesForServicesOtherGrp>
      <OfficeExpensesGrp>
        <TotalAmt>2048</TotalAmt>
        <ProgramServicesAmt>1024</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1024</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>1996</TotalAmt>
        <ManagementAndGeneralAmt>1996</ManagementAndGeneralAmt>
      </ConferencesMeetingsGrp>
      <InsuranceGrp>
        <TotalAmt>5416</TotalAmt>
        <ManagementAndGeneralAmt>5416</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>PCORI Fee</Desc>
        <TotalAmt>1558</TotalAmt>
        <ManagementAndGeneralAmt>1558</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>2477596</TotalAmt>
        <ProgramServicesAmt>2401212</ProgramServicesAmt>
        <ManagementAndGeneralAmt>76384</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>-46673</BOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>345030</BOYAmt>
        <EOYAmt>1516322</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <AccountsReceivableGrp>
        <BOYAmt>441777</BOYAmt>
        <EOYAmt>416466</EOYAmt>
      </AccountsReceivableGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>2611</BOYAmt>
        <EOYAmt>2237</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>2353509</BOYAmt>
        <EOYAmt>2286304</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <TotalAssetsGrp>
        <BOYAmt>3096254</BOYAmt>
        <EOYAmt>4221329</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>14253</BOYAmt>
        <EOYAmt>68010</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>14253</BOYAmt>
        <EOYAmt>68010</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrgDoesNotFollowFASB117Ind>X</OrgDoesNotFollowFASB117Ind>
      <CapStkTrPrinCurrentFundsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </CapStkTrPrinCurrentFundsGrp>
      <PdInCapSrplsLandBldgEqpFundGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </PdInCapSrplsLandBldgEqpFundGrp>
      <RtnEarnEndowmentIncmOthFndsGrp>
        <BOYAmt>3082001</BOYAmt>
        <EOYAmt>4153319</EOYAmt>
      </RtnEarnEndowmentIncmOthFndsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>3082001</BOYAmt>
        <EOYAmt>4153319</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>3096254</BOYAmt>
        <EOYAmt>4221329</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>809630</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>261688</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>0</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <TotalBookValueLandBuildingsAmt>0</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>3539389</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>261688</NetUnrealizedGainsInvstAmt>
      <RevenueNotReportedAmt>261688</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>3277701</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>9525</InvestmentExpensesNotIncldAmt>
      <RevenueNotReportedFinclStmtAmt>9525</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>3287226</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>2468071</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesNotReportedAmt>0</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>2468071</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>9525</InvestmentExpensesNotIncld2Amt>
      <ExpensesNotRptFinclStmtAmt>9525</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>2477596</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part X, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>FASB ASC 740-10 clarifies the accounting and provides guidance for uncertainty in income taxes recognized in an entity's financial statements. It prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken, in a tax return. FASB ASC 740-10-50-15 also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods, disclosure and transition. A plan's exempt status is a tax position that may be subject to uncertainty. There were no penalties or interest recognized in the Statement of Net Assets or in the Statement of Changes in Net Assets. Management does not believe its financial statements include any uncertain tax positions. The Trustees believe the Fund's tax returns for the fiscal years 2022, 2023 and 2024 remain subject to examination by major tax jurisdictions.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>George A Kisor</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>92706</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>81605</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>174311</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>Three trustees are designated by the Plumbers and Steamfitters Local Union No. 521. Three trustees are designated by the Huntington Plumbing-Heating-Cooling Contractors Association.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>The Form will be reviewed by one trustee.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>Annually each trustee reviews the written conflict of interest policy and attests that he/she has no conflict of interest.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>It is not the policy of the Fund to make any items public. Upon request, such items will be provided to the participants of the Fund, contributing employers and governmental agencies.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>Plumbers and Steamfitters Local 521 Supplemental Health Fund</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>9200 US Route 60</AddressLine1Txt>
          <CityNm>ONA</CityNm>
          <StateAbbreviationCd>WV</StateAbbreviationCd>
          <ZIPCd>25545</ZIPCd>
        </USAddress>
        <EIN>261357279</EIN>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>0</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <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>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>Plumbers and Steamfitters Local 521 Supplemental Health Fund</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>Q</TransactionTypeTxt>
        <InvolvedAmt>107752</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>Cash</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
    </IRS990ScheduleR>
  </ReturnData>
</Return>