Civic Intelligence

Boston Groundwater Trust

EIN 20-1941686 • 501(c)3 • Boston, MA

Profile

To promote the public health, safety, convenience, and welfare by monitoring groundwater levels and making recommendations to raise, restore, or protect the water table in areas where it is low to protect wood pile and other types of foundations.

229 Berkeley St 410Boston, MA 02116

www.bostongroundwater.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

26th percentile

0.00x

Higher debt load relative to assets than 26% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Source year 2025

Liabilities / Revenue

31st percentile

0.01x

Higher debt load relative to revenue than 31% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Source year 2025

Net Margin

71st percentile

18%

Higher net margin than 71% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Source year 2025

Top Officer Pay

76th percentile

$126,120

Higher top officer pay than 76% of similar nonprofits.

Top officer pay equals 46.1% of source-year revenue.

501(c)3 • $1M-$5M nonprofits • Source year 2025

Asset Growth

54th percentile

4.9%

Faster asset growth than 54% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Annualized from 2024 to 2025

Revenue Growth

34th percentile

-1.3%

Faster revenue growth than 34% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Annualized from 2024 to 2025

Balance Sheet
Liabilities / Assets26th percentile

Assets

Up

$1,073,856

Up $49,941 (+4.9%) from 2024

Liabilities

Up

$3,186

Up $308 (+11%) from 2024

Net Assets

Up

$1,070,670

Up $49,633 (+4.9%) from 2024

Operations
Liabilities / Revenue31st percentileNet Margin71st percentile

Revenue

Down

$273,315

Down $3,685 (-1.3%) from 2024

Expenses

Down

$223,682

Down $4,077 (-1.8%) from 2024

Net Income

Up

$49,633

Up $392 (+0.8%) from 2024

Trend Graphs

Balance Sheet Trend

Asset Growth54th percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

$1.5M$1.0M$500K$0Assets 2012: $733,779Liabilities 2012: $3,180Net Assets 2012: $730,5992012Assets 2013: $729,992Liabilities 2013: $5,180Net Assets 2013: $724,8122013Assets 2014: $719,015Liabilities 2014: $6,086Net Assets 2014: $712,9292014Assets 2015: $704,218Liabilities 2015: $4,641Net Assets 2015: $699,5772015Assets 2016: $751,870Liabilities 2016: $3,482Net Assets 2016: $748,3882016Assets 2017: $805,363Liabilities 2017: $29,740Net Assets 2017: $775,6232017Assets 2018: $794,756Liabilities 2018: $4,221Net Assets 2018: $790,5352018Assets 2019: $831,758Liabilities 2019: $3,861Net Assets 2019: $827,8972019Assets 2020: $893,635Liabilities 2020: $5,299Net Assets 2020: $888,3362020Assets 2021: $942,018Liabilities 2021: $54,747Net Assets 2021: $887,2712021Assets 2022: $889,064Liabilities 2022: $6,939Net Assets 2022: $882,1252022Assets 2023: $974,373Liabilities 2023: $2,577Net Assets 2023: $971,7962023Assets 2024: $1,023,915Liabilities 2024: $2,878Net Assets 2024: $1,021,0372024Assets 2025: $1,073,856Liabilities 2025: $3,186Net Assets 2025: $1,070,6702025

Highlighted filing

2025

Assets$1,073,856
Liabilities$3,186
Net Assets$1,070,670
Open 2025 Filing

Operations Trend

Revenue Growth34th percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

$300K$200K$100K$0-$100KExpenses 2012: $266,1142012Expenses 2013: $207,0732013Revenue 2014: $213,978Expenses 2014: $225,861Net Income 2014: -$11,8832014Revenue 2015: $204,966Expenses 2015: $218,318Net Income 2015: -$13,3522015Revenue 2016: $205,097Expenses 2016: $156,286Net Income 2016: $48,8112016Revenue 2017: $210,734Expenses 2017: $183,499Net Income 2017: $27,2352017Revenue 2018: $207,332Expenses 2018: $192,420Net Income 2018: $14,9122018Revenue 2019: $210,558Expenses 2019: $173,196Net Income 2019: $37,3622019Revenue 2020: $213,066Expenses 2020: $152,627Net Income 2020: $60,4392020Revenue 2021: $206,760Expenses 2021: $207,825Net Income 2021: -$1,0652021Revenue 2022: $200,943Expenses 2022: $206,089Net Income 2022: -$5,1462022Revenue 2023: $277,473Expenses 2023: $187,801Net Income 2023: $89,6722023Revenue 2024: $277,000Expenses 2024: $227,759Net Income 2024: $49,2412024Revenue 2025: $273,315Expenses 2025: $223,682Net Income 2025: $49,6332025

Highlighted filing

2025

Revenue$273,315
Expenses$223,682
Net Income$49,633
Open 2025 Filing

Filings

Most recent year

2025 • Form 990Detailed filing. Detailed filing data is available for this year.

Open filing
Assets
$1,073,856
Liabilities
$3,186
Net assets
$1,070,670
Revenue
$273,315
Expenses
$223,682
Net income
$49,633
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2025Detailed filing. Detailed filing data is available for this year.$1.07$0.00$1.07$0.27$0.22$0.05
2024Detailed filing. Detailed filing data is available for this year.$1.02$0.00$1.02$0.28$0.23$0.05
2023Detailed filing. Detailed filing data is available for this year.$0.97$0.00$0.97$0.28$0.19$0.09
2022Detailed filing. Detailed filing data is available for this year.$0.89$0.01$0.88$0.20$0.21$0.01
2021Detailed filing. Detailed filing data is available for this year.$0.94$0.05$0.89$0.21$0.21$0.00
2020Detailed filing. Detailed filing data is available for this year.$0.89$0.01$0.89$0.21$0.15$0.06
2019Detailed filing. Detailed filing data is available for this year.$0.83$0.00$0.83$0.21$0.17$0.04
2018Detailed filing. Detailed filing data is available for this year.$0.79$0.00$0.79$0.21$0.19$0.01
2017Detailed filing. Detailed filing data is available for this year.$0.81$0.03$0.78$0.21$0.18$0.03
2016Detailed filing. Detailed filing data is available for this year.$0.75$0.00$0.75$0.21$0.16$0.05
2015Detailed filing. Detailed filing data is available for this year.$0.70$0.00$0.70$0.20$0.22$0.01
2014Detailed filing. Detailed filing data is available for this year.$0.72$0.01$0.71$0.21$0.23$0.01
2013Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.73$0.01$0.72$0.21
2012Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.73$0.00$0.73$0.27
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jul 1, 2024 to Jun 30, 2025
Signed
Sep 24, 2025
Return Version
2024v5.2
Gross Receipts
$478,315
Mission and Program Overview

Mission

The trust was formed pursuant to a city ordinance to monitor and analyze the ground water levels in the city of boston and to lessen the burdens of the government. The trust acts for the benefit of boston generally.

See form 990 part iiithe trust was formed pursuant to a city ordinance to monitor and analyze the ground water levels in the city of boston and to lessen the burdens of the government. The trust acts for the benefit of boston generally.

Balance Sheet Detail
LineBeginningEndChange
Assets
Investments in Publicly Traded Securities$760,935$549,932▼ $211,003
Savings and Temporary Cash Investments$113,046$350,883▲ $237,837
Cash and Non-Interest-Bearing Accounts$106,478$145,570▲ $39,092
Land, Buildings, and Equipment, Net$36,166$21,700▼ $14,466
Accounts Receivable$7,290$5,771▼ $1,519
Total Assets$1,023,915$1,073,856▲ $49,941
Liabilities
Accounts Payable and Accrued Expenses$2,878$3,186▲ $308
Total Liabilities$2,878$3,186▲ $308
Net Assets / Fund Balance
Net Assets Without Donor Restrictions$1,021,037$1,070,670▲ $49,633
Total Net Assets Fund Balance$1,021,037$1,070,670▲ $49,633
Total Liabilities and Net Assets / Fund Balance$1,023,915$1,073,856▲ $49,941

Asset Categories

AssetBook ValueDepreciationBasis
Equipment$21,700$87,650$109,350
Compensation and Service Providers
Top Officer Pay76th percentile

Employees

NameTitleFull / Part TimeBaseOtherTotal
Christian SimonelliExecutive DirectorFT$120,120$6,000$126,120

Board Members and Trustees

NameTitle
Gary SaundersTrustee, Co-chair
Aaron MichlewitzTrustee
Alice BrownTrustee
Angie LiouTrustee
Beatrice NessenTrustee
Elliott LafferTrustee
Henry VitaleTrustee
Kate EnglandTrustee
Peter ShillandTrustee
Sharon DurkanTrustee
Janine CommerfordTrustee, Secretary
Robert WhitneyTrustee-treasurer
Revenue and Support

Revenue Composition

Contributions and Grants
$248,000
Program Service Revenue
$0
Investment Income
$25,315
Other Revenue
$0
Change in Net Assets
$49,633
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Salaries, Compensation, and Employee Benefits$151,199
Other Expenses$72,483
Grants and Similar Amounts Paid$0
Professional Fundraising Fees$0
Total Fundraising Expense$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Current Officers, Directors, Trustees, and Key Employees$60,291$60,291-$120,582
Occupancy$13,551$4,517-$18,068
Depreciation Depletion$14,466--$14,466
Other Expenses$14,268$14,339-$14,268
Other Employee Benefits$6,576$6,576-$13,152
Payroll Taxes$5,066$5,066-$10,132
Fees for Services Accounting-$7,500-$7,500
Other Salaries and Wages$7,333--$7,333
Insurance-$1,880-$1,880
Total Functional Expenses$123,513$100,169$0$223,682
Fundraising, Events, and Gaming
Fundraising activities
No
Gaming activities
No
Professional fundraiser used
No

Fundraising and Gaming Totals

Line ItemAmount
Professional Fundraising Fees$0
Political and Lobbying Activity
Political campaign activity
No
Lobbying activity
No
Subject to proxy tax
No
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
Yes
Annual disclosure for covered persons
Yes
Audit committee
No
Business relationship with 35% controlled entity
No
Business relationship with family members
No
Business relationship with organization members
No
Material changes to governing documents
No
Compensation from other sources disclosed
No
CEO compensation reviewed
Yes
Other officer compensation reviewed
No
Conflict-of-interest policy
Yes
Audited financial statements prepared
No
Key decisions subject to board approval
No
Management duties delegated
No

Governance Explanations

Form 990, Part VI, Section B, Line 11B

“Executive director reviews and signs form 990.”

Form 990, Part VI, Section B, Line 15A

“The co-chairs and executive director meet annually to review performance and compensation for the executive director.”

Form 990, Part VI, Section C, Line 19

“Documents are posted for public inspection to the trust's website.”

Filing and Contact Details

Filer

Filer Name
Boston Groundwater Trust
EIN
20-1941686
Phone
6178598439
Address
229 BERKELEY ST 410, BOSTON, MA 02116

Signing Officer

Name
Christian Simonelli
Title
Executive Director
Phone
6178598439
Signed
2025-09-24
Discuss with paid preparer
Yes

Organization Details

Principal Officer
Christian Simonelli
Formed
1986
Legal Domicile
Ma
Voting Board Members
12
Independent Board Members
12
Employees
3
Volunteers
0

Preparer

Firm
Raphael and Raphael Llp
Address
312 STUART STREET 3RD FLOOR, BOSTON, MA 02116
Preparer
Harry S Raphael
Phone
6173570100
Raw XML AppendixShowing 400 of 412 raw XML fields

This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

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IRS990/Form990PartVIISectionAGrp/TitleTxt3TRUSTEE, CO-CHAIR
IRS990/Form990PartVIISectionAGrp/TitleTxt4TRUSTEE
IRS990/Form990PartVIISectionAGrp/TitleTxt5TRUSTEE, SECRETARY
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IRS990/MissionDesc0TO PROMOTE THE PUBLIC HEALTH, SAFETY, CONVENIENCE, AND WELFARE BY MONITORING GROUNDWATER LEVELS AND MAKING RECOMMENDATIONS TO RAISE, RESTORE, OR PROTECT THE WATER TABLE IN AREAS WHERE IT IS LOW TO PROTECT WOOD PILE AND OTHER TYPES OF FOUNDATIONS.
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IRS990/OccupancyGrp/ManagementAndGeneralAmt04517
IRS990/OccupancyGrp/ProgramServicesAmt013551
IRS990/OccupancyGrp/TotalAmt018068
IRS990/OfficerMailingAddressInd00
IRS990/OperateHospitalInd00
IRS990/Organization501c3Ind0X
IRS990/OrganizationFollowsFASB117Ind0X
IRS990/OtherChangesInNetAssetsAmt00
IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt06576
IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt06576
IRS990/OtherEmployeeBenefitsGrp/TotalAmt013152
IRS990/OtherExpensesGrp/Desc0OFFICE AND MISCELLANEOU
IRS990/OtherExpensesGrp/Desc1GROUNDWATER MONITORING
IRS990/OtherExpensesGrp/ManagementAndGeneralAmt014339
IRS990/OtherExpensesGrp/ProgramServicesAmt01962
IRS990/OtherExpensesGrp/ProgramServicesAmt114268
IRS990/OtherExpensesGrp/TotalAmt016301
IRS990/OtherExpensesGrp/TotalAmt114268
IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt07333
IRS990/OtherSalariesAndWagesGrp/TotalAmt07333
IRS990/PartialLiquidationInd00
IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt05066
IRS990/PayrollTaxesGrp/ProgramServicesAmt05066
IRS990/PayrollTaxesGrp/TotalAmt010132
IRS990/PoliticalCampaignActyInd00
IRS990/PrincipalOfficerNm0CHRISTIAN SIMONELLI
IRS990/ProfessionalFundraisingInd00
IRS990/ProhibitedTaxShelterTransInd00
IRS990/PYBenefitsPaidToMembersAmt00
IRS990/PYContributionsGrantsAmt0248000
IRS990/PYExcessBenefitTransInd00
IRS990/PYGrantsAndSimilarPaidAmt00
IRS990/PYInvestmentIncomeAmt024500
IRS990/PYOtherExpensesAmt075496
IRS990/PYOtherRevenueAmt00
IRS990/PYProgramServiceRevenueAmt04500
IRS990/PYRevenuesLessExpensesAmt049241
IRS990/PYSalariesCompEmpBnftPaidAmt0152263
IRS990/PYTotalExpensesAmt0227759
IRS990/PYTotalProfFndrsngExpnsAmt00
IRS990/PYTotalRevenueAmt0277000
IRS990/QuidProQuoContributionsInd00
IRS990/ReconcilationRevenueExpnssAmt049633
IRS990/RegularMonitoringEnfrcInd00
IRS990/RelatedEntityInd01
IRS990/RelatedOrganizationCtrlEntInd00
IRS990/ReportInvestmentsOtherSecInd00
IRS990/ReportLandBuildingEquipmentInd01
IRS990/ReportOtherAssetsInd00
IRS990/ReportOtherLiabilitiesInd00
IRS990/ReportProgramRelatedInvstInd00
IRS990/SavingsAndTempCashInvstGrp/BOYAmt0113046
IRS990/SavingsAndTempCashInvstGrp/EOYAmt0350883
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt0248000
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt0248000
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt0248000
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt0187373
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt0194373
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt01125746
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt025315
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt024500
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt020473
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt013569
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt012387
IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt096244
IRS990ScheduleA/PublicOrganization170Ind0X
IRS990ScheduleA/PublicSupportCY170Pct00.92120
IRS990ScheduleA/PublicSupportPY170Pct00.92290
IRS990ScheduleA/PublicSupportTotal170Amt01125746
IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind0X
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt0248000
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt0248000
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt0248000
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt0187373
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt0194373
IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt01125746
IRS990ScheduleA/TotalSupportAmt01221990
IRS990/ScheduleBRequiredInd00
IRS990ScheduleD/EquipmentGrp/BookValueAmt021700
IRS990ScheduleD/EquipmentGrp/DepreciationAmt087650
IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt0109350
IRS990ScheduleD/TotalBookValueLandBuildingsAmt021700
IRS990/ScheduleJRequiredInd00
IRS990/ScheduleORequiredInd01
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0EXECUTIVE DIRECTOR REVIEWS AND SIGNS FORM 990.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1THE CO-CHAIRS AND EXECUTIVE DIRECTOR MEET ANNUALLY TO REVIEW PERFORMANCE AND COMPENSATION FOR THE EXECUTIVE DIRECTOR.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt2DOCUMENTS ARE POSTED FOR PUBLIC INSPECTION TO THE TRUST'S WEBSITE.
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0FORM 990, PART VI, SECTION B, LINE 11B
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc1FORM 990, PART VI, SECTION B, LINE 15A
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc2FORM 990, PART VI, SECTION C, LINE 19
IRS990ScheduleR/AssetExchangeInd00
IRS990ScheduleR/AssetPurchaseFromOtherOrgInd00
IRS990ScheduleR/AssetSaleToOtherOrgInd00
IRS990ScheduleR/DivRelatedOrganizationInd00
IRS990ScheduleR/GiftGrntCapContriFromOthOrgInd00
IRS990ScheduleR/GiftGrntOrCapContriToOthOrgInd00
IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ControlledOrganizationInd00
IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/DisregardedEntityName/BusinessNameLine1Txt0CITY OF BOSTON
IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/LegalDomicileStateCd0MA
IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/PrimaryActivitiesTxt0CITY GOVERNMENT
IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/AddressLine1Txt0ONE CITY HALL SQUARE
IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/CityNm0BOSTON
IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/StateAbbreviationCd0MA
IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/ZIPCd002201
IRS990ScheduleR/LoansOrGuaranteesFromOthOrgInd00
IRS990ScheduleR/LoansOrGuaranteesToOtherOrgInd00
IRS990ScheduleR/PaidEmployeesSharingInd00
IRS990ScheduleR/PerformOfServicesByOtherOrgInd00
IRS990ScheduleR/PerformOfServicesForOthOrgInd00
IRS990ScheduleR/ReceiptOfIntAnntsRntsRyltsInd00
IRS990ScheduleR/ReimbursementPaidByOtherOrgInd00
IRS990ScheduleR/ReimbursementPaidToOtherOrgInd00
IRS990ScheduleR/RentalOfFacilitiesToOthOrgInd00
IRS990ScheduleR/RentalOfFcltsFromOthOrgInd00
IRS990ScheduleR/SharingOfFacilitiesInd00
IRS990ScheduleR/TransferFromOtherOrgInd00
IRS990ScheduleR/TransferToOtherOrgInd00
IRS990/SchoolOperatingInd00
IRS990/SignificantChangeInd00
IRS990/SignificantNewProgramSrvcInd00
IRS990/SubjectToExcsTaxNetInvstIncInd00
IRS990/SubjectToProxyTaxInd00
IRS990/SubjToTaxRmnrtnExPrchtPymtInd00
IRS990/TaxablePartyNotificationInd00
IRS990/TaxExemptBondsInd00
IRS990/TerminateOperationsInd00
IRS990/TotalAssetsBOYAmt01023915
IRS990/TotalAssetsEOYAmt01073856
IRS990/TotalAssetsGrp/BOYAmt01023915
IRS990/TotalAssetsGrp/EOYAmt01073856
IRS990/TotalCompGreaterThan150KInd00
IRS990/TotalContributionsAmt0248000
IRS990/TotalEmployeeCnt03
IRS990/TotalFunctionalExpensesGrp/FundraisingAmt00
IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt0100169
IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt0123513
IRS990/TotalFunctionalExpensesGrp/TotalAmt0223682
IRS990/TotalGrossUBIAmt00
IRS990/TotalLiabilitiesBOYAmt02878
IRS990/TotalLiabilitiesEOYAmt03186
IRS990/TotalLiabilitiesGrp/BOYAmt02878
IRS990/TotalLiabilitiesGrp/EOYAmt03186
IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt01021037
IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt01070670
IRS990/TotalOtherCompensationAmt06000
IRS990/TotalProgramServiceExpensesAmt0123513
IRS990/TotalReportableCompFromOrgAmt0120120
IRS990/TotalRevenueGrp/ExclusionAmt025315
IRS990/TotalRevenueGrp/RelatedOrExemptFuncIncomeAmt00
IRS990/TotalRevenueGrp/TotalRevenueColumnAmt0273315
IRS990/TotalRevenueGrp/UnrelatedBusinessRevenueAmt00
IRS990/TotalVolunteersCnt00
IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt01023915
IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt01073856
IRS990/TotReportableCompRltdOrgAmt00
IRS990/TrnsfrExmptNonChrtblRltdOrgInd00
IRS990/TypeOfOrganizationTrustInd0X
IRS990/UnrelatedBusIncmOverLimitInd00
IRS990/UponRequestInd0X
IRS990/USAddress/AddressLine1Txt0229 BERKELEY ST 410
IRS990/USAddress/CityNm0BOSTON
IRS990/USAddress/StateAbbreviationCd0MA
IRS990/USAddress/ZIPCd002116
IRS990/VotingMembersGoverningBodyCnt012
IRS990/VotingMembersIndependentCnt012
IRS990/WebsiteAddressTxt0WWW.BOSTONGROUNDWATER.ORG
IRS990/WhistleblowerPolicyInd00
ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd01
ReturnHeader/BusinessOfficerGrp/PersonNm0CHRISTIAN SIMONELLI
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0EXECUTIVE DIRECTOR
ReturnHeader/BusinessOfficerGrp/PhoneNum06178598439
ReturnHeader/BusinessOfficerGrp/SignatureDt02025-09-24
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0BOSTON GROUNDWATER TRUST
ReturnHeader/Filer/BusinessNameControlTxt0BOST
ReturnHeader/Filer/EIN0201941686
ReturnHeader/Filer/PhoneNum06178598439
ReturnHeader/Filer/USAddress/AddressLine1Txt0229 BERKELEY ST 410
ReturnHeader/Filer/USAddress/CityNm0BOSTON
ReturnHeader/Filer/USAddress/StateAbbreviationCd0MA
ReturnHeader/Filer/USAddress/ZIPCd002116
ReturnHeader/IRSResponsiblePrtyInfoCurrInd00
ReturnHeader/PreparerFirmGrp/PreparerFirmEIN0042206126

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