<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2020v4.0" xsi:schemaLocation="http://www.irs.gov/efile">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2021-11-09T08:16:26-08:00</ReturnTs>
    <TaxPeriodEndDt>2021-08-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>391016701</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>PPG Partners LLC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>5525 Green Bay Road</AddressLine1Txt>
        <CityNm>Kenosha</CityNm>
        <StateAbbreviationCd>WI</StateAbbreviationCd>
        <ZIPCd>53144</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2020-09-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>391752154</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>MCHENRY COUNTY DENTAL SOCIETY</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>MCHE</BusinessNameControlTxt>
      <PhoneNum>2626572060</PhoneNum>
      <USAddress>
        <AddressLine1Txt>5525 GREEN BAY ROAD</AddressLine1Txt>
        <CityNm>KENOSHA</CityNm>
        <StateAbbreviationCd>WI</StateAbbreviationCd>
        <ZIPCd>53144</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>KEVIN BRUGGEMAN</PersonNm>
      <PersonTitleTxt>Secretary/Treas</PersonTitleTxt>
      <SignatureDt>2021-11-09</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>KEVIN</PersonFirstNm>
        <PersonLastNm>BRUGGEMAN</PersonLastNm>
      </PersonFullName>
      <SSN>999009999</SSN>
    </SigningOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>Donna J Hansen CPA</PreparerPersonNm>
      <PTIN>P00066284</PTIN>
      <PhoneNum>2626572060</PhoneNum>
    </PreparerPersonGrp>
    <AdditionalFilerInformation>
      <TrustedCustomerGrp>
        <TrustedCustomerCd>2</TrustedCustomerCd>
        <AuthenticationAssuranceLevelCd>AAL1</AuthenticationAssuranceLevelCd>
        <IdentityAssuranceLevelCd>IAL1</IdentityAssuranceLevelCd>
        <FederatedAssuranceLevelCd>FAL1</FederatedAssuranceLevelCd>
      </TrustedCustomerGrp>
    </AdditionalFilerInformation>
    <TaxYr>2020</TaxYr>
    <BuildTS>2022-09-23 18:48:47Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="3">
    <IRS990EZ documentId="IRS990EZ" referenceDocumentId="IRS990ScheduleO TransfersPersonalBenefitsContr" softwareId="20011551" softwareVersionNum="2020v4.0">
      <GroupExemptionNum>5013</GroupExemptionNum>
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>N/A</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="IRS990ScheduleA">X</Organization501c3Ind>
      <TypeOfOrganizationOtherInd>X</TypeOfOrganizationOtherInd>
      <GrossReceiptsAmt>29436</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ProgramServiceRevenueAmt>9630</ProgramServiceRevenueAmt>
      <MembershipDuesAmt>13396</MembershipDuesAmt>
      <InvestmentIncomeAmt>30</InvestmentIncomeAmt>
      <CostOrOtherBasisExpenseSaleAmt>0</CostOrOtherBasisExpenseSaleAmt>
      <FundraisingGrossIncomeAmt>6380</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>10234</SpecialEventsDirectExpensesAmt>
      <SpecialEventsNetIncomeLossAmt>-3854</SpecialEventsNetIncomeLossAmt>
      <CostOfGoodsSoldAmt>0</CostOfGoodsSoldAmt>
      <TotalRevenueAmt>19202</TotalRevenueAmt>
      <FeesAndOtherPymtToIndCntrctAmt>920</FeesAndOtherPymtToIndCntrctAmt>
      <PrintingPublicationsPostageAmt>113</PrintingPublicationsPostageAmt>
      <OtherExpensesTotalAmt>16617</OtherExpensesTotalAmt>
      <TotalExpensesAmt>17650</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>1552</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>48137</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>49689</NetAssetsOrFundBalancesEOYAmt>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>48137</BOYAmt>
        <EOYAmt>49689</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <Form990TotalAssetsGrp>
        <BOYAmt>48137</BOYAmt>
        <EOYAmt>49689</EOYAmt>
      </Form990TotalAssetsGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>48137</BOYAmt>
        <EOYAmt>49689</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>DENTAL EDUCATION WAS PROMOTED TO MEMBERS OF THE GROUP THROUGH LECTURES AND SEMINARS BY SPECIALISTS IN DENTAL HEALTH.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>DENTAL EDUCATION WAS PROMOTED TO MEMBERS OF THE GROUP THROUGH LECTURES AND SEMINARS BY SPECIALISTS IN DENTAL HEALTH.</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>27884</GrantsAndAllocationsAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>27884</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>TOM KOPP</PersonNm>
        <TitleTxt>President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ALEX TZANOS</PersonNm>
        <TitleTxt>President Elect</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>BRYAN VANOVEN</PersonNm>
        <TitleTxt>Vice President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>WHITNEY BEHM</PersonNm>
        <TitleTxt>Secretary/Treas</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>false</OrganizationDissolvedEtcInd>
      <Form1120PolFiledInd>false</Form1120PolFiledInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <TaxImposedUnderIRC4911Amt>0</TaxImposedUnderIRC4911Amt>
      <TaxImposedUnderIRC4912Amt>0</TaxImposedUnderIRC4912Amt>
      <TaxImposedUnderIRC4955Amt>0</TaxImposedUnderIRC4955Amt>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <TaxImposedOnOrganizationMgrAmt>0</TaxImposedOnOrganizationMgrAmt>
      <TaxReimbursedByOrganizationAmt>0</TaxReimbursedByOrganizationAmt>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <BooksInCareOfDetail>
        <PersonNm>PPG PARTNERS LLC</PersonNm>
        <USAddress>
          <AddressLine1Txt>5525 GREEN BAY ROAD</AddressLine1Txt>
          <CityNm>KENOSHA</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>53144</ZIPCd>
        </USAddress>
        <PhoneNum>2626572060</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <DonorAdvisedFndsInd>false</DonorAdvisedFndsInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
      <FiledScheduleAInd>true</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="IRS990ScheduleA" softwareId="20011551" softwareVersionNum="2020v4.0">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>15075</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>17185</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>15393</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>14339</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>13396</CurrentTaxYearAmt>
        <TotalAmt>75388</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>32996</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>25064</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>28622</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>26553</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>16010</CurrentTaxYearAmt>
        <TotalAmt>129245</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <GrossReceiptsNonUnrltBusGrp>
        <TotalAmt>0</TotalAmt>
      </GrossReceiptsNonUnrltBusGrp>
      <TaxRevLeviedOrgnztnlBnft509Grp>
        <TotalAmt>0</TotalAmt>
      </TaxRevLeviedOrgnztnlBnft509Grp>
      <GovtFurnSrvcFcltsVl509Grp>
        <TotalAmt>0</TotalAmt>
      </GovtFurnSrvcFcltsVl509Grp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>48071</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>42249</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>44015</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>40892</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>29406</CurrentTaxYearAmt>
        <TotalAmt>204633</TotalAmt>
      </Total509Grp>
      <AmountsRcvdDsqlfyPersonGrp>
        <TotalAmt>0</TotalAmt>
      </AmountsRcvdDsqlfyPersonGrp>
      <SubstantialContributorsAmtGrp>
        <TotalAmt>0</TotalAmt>
      </SubstantialContributorsAmtGrp>
      <PublicSupportTotal509Amt>204633</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>42</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>72</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>134</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>38</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>30</CurrentTaxYearAmt>
        <TotalAmt>316</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <Post1975UBTIGrp>
        <TotalAmt>0</TotalAmt>
      </Post1975UBTIGrp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>42</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>72</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>134</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>38</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>30</CurrentTaxYearAmt>
        <TotalAmt>316</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <NetIncomeFromOtherUBIGrp>
        <TotalAmt>0</TotalAmt>
      </NetIncomeFromOtherUBIGrp>
      <OtherIncome509Grp>
        <TotalAmt>0</TotalAmt>
      </OtherIncome509Grp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>48113</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>42321</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>44149</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>40930</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>29436</CurrentTaxYearAmt>
        <TotalAmt>204949</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.99850</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.99850</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.00150</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.00150</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleO documentId="IRS990ScheduleO" softwareId="20011551" softwareVersionNum="2020v4.0">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.1003</FormAndLineReferenceDesc>
        <ExplanationTxt>Information Technology $239</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.1</FormAndLineReferenceDesc>
        <ExplanationTxt>DINNER MEETINGS $5649</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.2</FormAndLineReferenceDesc>
        <ExplanationTxt>FALL SEMINAR $3000</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.3</FormAndLineReferenceDesc>
        <ExplanationTxt>MEETING REIMB. $3000</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.4</FormAndLineReferenceDesc>
        <ExplanationTxt>DONATIONS $2500</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.5</FormAndLineReferenceDesc>
        <ExplanationTxt>INST. DINNER $1355</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.6</FormAndLineReferenceDesc>
        <ExplanationTxt>SPEAKER FEES $750</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.8</FormAndLineReferenceDesc>
        <ExplanationTxt>CPR MEETINGS $111</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.9</FormAndLineReferenceDesc>
        <ExplanationTxt>NOT FOR PROFIT FEE $13</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
