Civic Intelligence

Mystic River Watershed Association Inc

EIN 23-7221094 • 501(c)3 • Arlington, MA

Profile

The mystic river watershed is a network of rivers, streams and ponds that all flow into the mystic river and ultimately boston harbor. Home to 600,000 residents, the mystic river watershed association is the only organization working to protect and restore this watershed; and engage and educate residents.

23 Maple StreetArlington, MA 02476

www.mysticriver.org

Siviq Scores

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

Liabilities / Assets

43rd percentile

0.12x

Higher debt load relative to assets than 43% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Source year 2024

Liabilities / Revenue

46th percentile

0.19x

Higher debt load relative to revenue than 46% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Source year 2024

Net Margin

29th percentile

-2.4%

Higher net margin than 29% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Source year 2024

Top Officer Pay

30th percentile

$130,517

Higher top officer pay than 30% of similar nonprofits.

Top officer pay equals 2.0% of source-year revenue.

501(c)3 • $10M-$25M nonprofits • Source year 2024

Asset Growth

59th percentile

7.1%

Faster asset growth than 59% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Annualized from 2023 to 2024

Revenue Growth

12th percentile

-21%

Faster revenue growth than 12% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Annualized from 2023 to 2024

Assets

Up

$10,795,076

Up $719,958 (+7.1%) from 2023

Liabilities

Up

$1,248,193

Up $546,627 (+78%) from 2023

Net Assets

Up

$9,546,883

Up $173,331 (+1.8%) from 2023

Revenue

Down

$6,487,669

Down $1,709,700 (-21%) from 2023

Expenses

Up

$6,646,070

Up $2,825,541 (+74%) from 2023

Net Income

Down

-$158,401

Down $4,535,241 (-104%) from 2023

Trend Graphs

Balance Sheet Trend

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

$15M$10M$5.0M$0Assets 2010: $736,899Liabilities 2010: $91,307Net Assets 2010: $645,5922010Assets 2011: $458,426Liabilities 2011: $85,932Net Assets 2011: $372,4942011Assets 2012: $365,313Liabilities 2012: $6,430Net Assets 2012: $358,8832012Assets 2013: $355,844Liabilities 2013: $12,365Net Assets 2013: $343,4792013Assets 2014: $278,770Liabilities 2014: $26,471Net Assets 2014: $252,2992014Assets 2015: $513,828Liabilities 2015: $92,179Net Assets 2015: $421,6492015Assets 2016: $514,011Liabilities 2016: $86,850Net Assets 2016: $427,1612016Assets 2017: $737,396Liabilities 2017: $42,828Net Assets 2017: $694,5682017Assets 2018: $883,721Liabilities 2018: $76,410Net Assets 2018: $807,3112018Assets 2019: $1,370,914Liabilities 2019: $81,709Net Assets 2019: $1,289,2052019Assets 2020: $2,376,260Liabilities 2020: $209,754Net Assets 2020: $2,166,5062020Assets 2021: $4,341,335Liabilities 2021: $316,212Net Assets 2021: $4,025,1232021Assets 2022: $4,843,866Liabilities 2022: $248,510Net Assets 2022: $4,595,3562022Assets 2023: $10,075,118Liabilities 2023: $701,566Net Assets 2023: $9,373,5522023Assets 2024: $10,795,076Liabilities 2024: $1,248,193Net Assets 2024: $9,546,8832024

Highlighted filing

2024

Assets$10,795,076
Liabilities$1,248,193
Net Assets$9,546,883

Operations Trend

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

$10M$5.0M$0-$5.0MExpenses 2010: $353,4002010Expenses 2011: $442,8102011Expenses 2012: $461,2832012Revenue 2013: $499,098Expenses 2013: $514,223Net Income 2013: -$15,1252013Revenue 2014: $383,672Expenses 2014: $474,852Net Income 2014: -$91,1802014Revenue 2015: $765,450Expenses 2015: $573,506Net Income 2015: $191,9442015Revenue 2016: $673,130Expenses 2016: $660,618Net Income 2016: $12,5122016Revenue 2017: $1,097,613Expenses 2017: $830,206Net Income 2017: $267,4072017Revenue 2018: $1,157,451Expenses 2018: $1,044,708Net Income 2018: $112,7432018Revenue 2019: $1,516,897Expenses 2019: $1,035,003Net Income 2019: $481,8942019Revenue 2020: $2,453,216Expenses 2020: $1,655,154Net Income 2020: $798,0622020Revenue 2021: $3,888,743Expenses 2021: $2,151,657Net Income 2021: $1,737,0862021Revenue 2022: $3,691,084Expenses 2022: $2,810,441Net Income 2022: $880,6432022Revenue 2023: $8,197,369Expenses 2023: $3,820,529Net Income 2023: $4,376,8402023Revenue 2024: $6,487,669Expenses 2024: $6,646,070Net Income 2024: -$158,4012024

Highlighted filing

2024

Revenue$6,487,669
Expenses$6,646,070
Net Income-$158,401

Filings

Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2024Facts available. Structured filing facts are available, but richer extracted sections are limited.$10.8$1.25$9.55$6.49$6.65$0.16
2023Detailed filing. Detailed filing data is available for this year.$10.1$0.70$9.37$8.20$3.82$4.38
2022Detailed filing. Detailed filing data is available for this year.$4.84$0.25$4.60$3.69$2.81$0.88
2021Detailed filing. Detailed filing data is available for this year.$4.34$0.32$4.03$3.89$2.15$1.74
2020Detailed filing. Detailed filing data is available for this year.$2.38$0.21$2.17$2.45$1.66$0.80
2019Detailed filing. Detailed filing data is available for this year.$1.37$0.08$1.29$1.52$1.04$0.48
2018Detailed filing. Detailed filing data is available for this year.$0.88$0.08$0.81$1.16$1.04$0.11
2017Detailed filing. Detailed filing data is available for this year.$0.74$0.04$0.69$1.10$0.83$0.27
2016Detailed filing. Detailed filing data is available for this year.$0.51$0.09$0.43$0.67$0.66$0.01
2015Detailed filing. Detailed filing data is available for this year.$0.51$0.09$0.42$0.77$0.57$0.19
2014Detailed filing. Detailed filing data is available for this year.$0.28$0.03$0.25$0.38$0.47$0.09
2013Detailed filing. Detailed filing data is available for this year.$0.36$0.01$0.34$0.50$0.51$0.02
2012Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.37$0.01$0.36$0.46
2011Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.46$0.09$0.37$0.44
2010Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.74$0.09$0.65$0.35
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
Sep 23, 2025
Return Version
2024v5.0
Gross Receipts
$6,487,669
Mission and Program Overview

Mission

Restore clean water in the mystic river watershed, protect its resources and establish relevant public information and education programs in support of its mission.

To protect and restore the mystic river, its tributaries and watershed lands for the benefit of present and future generations and to celebrate the value, importance and great beauty of these natural resources. Myrwa is protecting water quality, restoring important habitat, building climate resilience, transforming parks and paths, and inspiring youth and community members.

Balance Sheet Detail
LineBeginningEndChange
Assets
Investments in Publicly Traded Securities$6,519,266$7,617,754▲ $1,098,488
Pledges and Grants Receivable$2,710,538$1,930,748▼ $779,790
Savings and Temporary Cash Investments$420,476$449,476▲ $29,000
Cash and Non-Interest-Bearing Accounts$364,622$339,711▼ $24,911
Accounts Receivable$11,400$122,082▲ $110,682
Land, Buildings, and Equipment, Net$32,677$79,605▲ $46,928
Prepaid Expenses and Deferred Charges$16,139$11,426▼ $4,713
Total Assets$10,075,118$10,795,076▲ $719,958
Other Assets Total-$244,274-
Liabilities
Grants Payable-$600,000-
Accounts Payable and Accrued Expenses$455,706$308,051▼ $147,655
Other Liabilities-$246,518-
Deferred Revenue$245,860$93,624▼ $152,236
Total Liabilities$701,566$1,248,193▲ $546,627
Net Assets / Fund Balance
Net Assets Without Donor Restrictions$7,235,630$6,140,186▼ $1,095,444
Net Assets With Donor Restrictions$2,137,922$3,406,697▲ $1,268,775
Total Net Assets Fund Balance$9,373,552$9,546,883▲ $173,331
Total Liabilities and Net Assets / Fund Balance$10,075,118$10,795,076▲ $719,958

Asset Categories

AssetBook ValueDepreciationBasis
Leasehold Improvements$54,057$7,913$61,970
Equipment$25,548$10,760$36,308
Compensation and Service Providers

Employees

NameTitleFull / Part TimeBaseOtherTotal
Patrick HerronExecutive DiFT$122,254$8,263$130,517
Julia E WormserSr. Policy aFT$72,307$2,193$74,500
Michelle LiebetreuDev & CommunFT$66,883$4,710$71,593

Board Members and Trustees

NameTitle
Britney SatterleePresident
Beatriz Gomez MouakadBoard Member
Erga PierretteBoard Member
Erik HansenBoard Member
John ReinhardtBoard Member
Karen Colon HayesBoard Member
Kelly RyanBoard Member
Marcia ManongBoard Member
Monica DriggersBoard Member
Ryan DingsBoard Member
Stephanie CarvalhoBoard Member
Victor CastroBoard Member
William T DenmanBoard Member
Mark JacobsonClerk
Helen QuachSecretary
Charles HolleyTreasurer
Julie Ing SternVP & Asst. C

Highest Paid Contractors

ContractorServicesLocationCompensation
Bald Hill Builders LLCConstruction25 WALPOLE PARK STE 10, Walpole, MA 02081$771,996
Revenue and Support

Revenue Composition

Contributions and Grants
$5,887,047
Program Service Revenue
$310,804
Investment Income
$289,818
Other Revenue
$0
All Other Contributions
$3,096,108
Change in Net Assets
$-158,401

Audited Revenue Reconciliation

Revenue per Audited Statements
$6,487,669
Revenue Not Reported on Form 990
$355,636
Total Revenue per Audited Statements
$6,843,305
Total Revenue per Form 990
$6,487,669
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Other Expenses$3,775,286
Salaries, Compensation, and Employee Benefits$1,972,923
Grants and Similar Amounts Paid$897,861
Total Fundraising Expense$132,560
Professional Fundraising Fees$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Fees for Services Other$3,162,739$106,828-$3,269,567
Other Salaries and Wages$1,339,625$66,575$52,406$1,458,606
Grants to Domestic Orgs$890,553--$890,553
Current Officers, Directors, Trustees, and Key Employees$65,605$92,257$47,154$205,016
Office Expenses$123,713$38,082$3,574$165,369
Payroll Taxes$126,513$14,189$8,894$149,596
Other Employee Benefits$82,127$16,031$5,658$103,816
Fees for Services Accounting$1,300$83,548-$84,848
Conferences and Meetings$44,794$13,307$93$58,194
Pension Plan Contributions$47,332$5,260$3,297$55,889
Occupancy$435$52,064-$52,499
Travel$32,783$684$44$33,511
Insurance$24$28,294-$28,318
Information Technology$12,924$11,722$2,362$27,008
Depreciation Depletion$7,130$7,913-$15,043
Other Expenses$2,321$7,230$78$9,629
Grants to Domestic Individuals$7,308--$7,308
Fees for Services Legal-$1,632-$1,632
Total Functional Expenses$5,967,894$545,616$132,560$6,646,070

Audited Expense Reconciliation

Line ItemAmount
Total Expenses per Audited Statements$6,669,974
Expenses per Audited Statements$6,646,070
Total Expenses per Form 990$6,646,070
Expenses Not Reported on Form 990$23,904
International Activity

Grant and Assistance Recipients

RecipientLocationCategoryPurposeAmount
City of MaldenMalden, MA501c3Park Construction$600,000
Greenroots IncChelsea, MA501c3Heat Convening$97,560
Everette Community GrowersEverett, MA501c3Covid Safe Cooling$64,298
Friends of Belle Isle MarchWiinthrop, MA-Education$20,328
Trustees of Tufts CollegeMedford, MAGovClean Air$20,000
Field of Green (via Arthur Kurtz)Lincoln, MA501c3Env. Restoration$12,050
Cambridge Health AllianceMalden, MAGovClean Air$12,000
Charles River Watershed AssociationBoston, MA-Env. Restoration$10,827
Neponsit River Watershed AssocCanton, MA-Env. Restoration$10,471
North & South Rivers Watershed AssNorwell, MA-Env. Restoration$9,884
Oars IncConcord, MA-Env. Restoration$8,927
Nashua River Watershed AssocGroton, MA-Env. Restoration$8,893
Cohasset Center for Student ResCohasset, MA-Env. Restoration$6,815
City of MedfordMedford, MA-Climate Resiliance$6,000
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
Debt and Bond Financing

Other Reported Liabilities

LiabilityAmount
Right of Use Lease Liability$246,518
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
No
Annual disclosure for covered persons
Yes
Audit committee
Yes
Backup withholding compliance
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, Page 6, Part VI, Line 6

Any individual may become a member of the corporation by making an annual financial contribution or by volunteering within the period since the last annual meeting.

Form 990, Page 6, Part VI, Line 7A

Organization has members that may elect governing body.

Form 990, Page 6, Part VI, Line 11B

Form 990 is provided for review to all board members.

Form 990, Page 6, Part VI, Line 12C

Annual reporting of possible conflicts are filed, reviewed and held by secrtary of the organization.

Form 990, Page 6, Part VI, Line 15A

The governance committee undertakes a process each year to review the performance of the executive director and assesses benchmark values to determine salary, and then vote as a board on approving a salary.

Form 990, Page 6, Part VI, Line 19

The organization provides to the public the applicable governing documents conflicts of interest policy, and financial statements, upon request.

Filing and Contact Details

Filer

Filer Name
Mystic River Watershed
EIN
23-7221094
Phone
7813163438
Address
23 MAPLE STREET, ARLINGTON, MA 02476

Signing Officer

Name
Charles Holley
Title
Treasurer
Phone
7813163438
Signed
2025-09-23
Discuss with paid preparer
Yes

Organization Details

Principal Officer
Britney Satterlee
Formed
1976
Legal Domicile
Ma
Voting Board Members
17
Independent Board Members
17
Employees
30
Volunteers
1,744

Preparer

Firm
Daviskelly Llp
Address
42 MILL ROAD, WILMINGTON, MA 01887
Preparer
Randall S Davis
Phone
9787648966
Supplemental Narrative

Additional Explanations

FORM 990 - ORGANIZATION'S MISSION

The mystic river watershed is a network of rivers, streams and ponds that all flow into the mystic river and ultimately boston harbor. Home to 600,000 residents, the mystic river watershed association is the only organization working to protect and restore this watershed; and engage and educate residents.

Form 990, Part IX, Line 11G

Recruiting 0 17,423 0 payroll 0 36,603 0 consultants 582,561 52,802 0 engineering design 1,192,501 0 0 facilitator 271,665 0 0 construction 1,057,130 0 0 communications 58,882 0 0 total 3,162,739 106,828 0

Raw XML AppendixShowing 400 of 678 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/PersonNm1JULIA E WORMSER
IRS990/Form990PartVIISectionAGrp/PersonNm2MICHELLE LIEBETREU
IRS990/Form990PartVIISectionAGrp/PersonNm3STEPHANIE CARVALHO
IRS990/Form990PartVIISectionAGrp/PersonNm4VICTOR CASTRO
IRS990/Form990PartVIISectionAGrp/PersonNm5WILLIAM T DENMAN
IRS990/Form990PartVIISectionAGrp/PersonNm6RYAN DINGS
IRS990/Form990PartVIISectionAGrp/PersonNm7MONICA DRIGGERS
IRS990/Form990PartVIISectionAGrp/PersonNm8ERIK HANSEN
IRS990/Form990PartVIISectionAGrp/PersonNm9CHARLES HOLLEY
IRS990/Form990PartVIISectionAGrp/PersonNm10MARK JACOBSON
IRS990/Form990PartVIISectionAGrp/PersonNm11MARCIA MANONG
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IRS990/Form990PartVIISectionAGrp/PersonNm16KELLY RYAN
IRS990/Form990PartVIISectionAGrp/PersonNm17BRITNEY SATTERLEE
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IRS990/Form990PartVIISectionAGrp/TitleTxt0EXECUTIVE DI
IRS990/Form990PartVIISectionAGrp/TitleTxt1SR. POLICY A
IRS990/Form990PartVIISectionAGrp/TitleTxt2DEV & COMMUN
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IRS990/Form990PartVIISectionAGrp/TitleTxt12BOARD MEMBER
IRS990/Form990PartVIISectionAGrp/TitleTxt13BOARD MEMBER
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IRS990/Form990PartVIISectionAGrp/TitleTxt16BOARD MEMBER
IRS990/Form990PartVIISectionAGrp/TitleTxt17PRESIDENT
IRS990/Form990PartVIISectionAGrp/TitleTxt18VP & ASST. C
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IRS990/MissionDesc0THE MYSTIC RIVER WATERSHED IS A NETWORK OF RIVERS, STREAMS AND PONDS THAT ALL FLOW INTO THE MYSTIC RIVER AND ULTIMATELY BOSTON HARBOR. HOME TO 600,000 RESIDENTS, THE MYSTIC RIVER WATERSHED ASSOCIATION IS THE ONLY ORGANIZATION WORKING TO PROTECT AND RESTORE THIS WATERSHED; AND ENGAGE AND EDUCATE RESIDENTS.
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IRS990/ProgSrvcAccomActy2Grp/Desc0EDUCATION AND VOLUNTEER STEWARDSHIP. MYRWA EDUCATES MORE THAN 2,000 YOUTH THROUGH EFFECTIVE PLACE-BASED PROGRAMMING IN SCHOOLS AND AFTER-SCHOOL PROGRAMS AND ENGAGES 1,800 VOLUNTEERS IN CLEANING UP AND CARING FOR OUR PARKS.
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IRS990/ProgSrvcAccomActy3Grp/Desc0CLIMATE RESILIENCY. MYRWA FOUNDED THE RESILIENT MYSTIC COLLABORATIVE IN PARTNERSHIP WITH 20 MUNICIPAL PARTNERS TO DEVELOP REGIONAL PROJECTS THAT CREATE HEALTHIER, AND MORE CLIMATE RESILIENT COMMUNITIES. THE RMC COMMUNITIES HAVE SECURED >50M EARMARKS AND STATE GRANTS TO ADDRESS STORMWATER FLOODING, URBAN HEAT ISLANDS AND SEA-LEVEL RISE.
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IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt0RECOVERY OF PRIOR WRITE OFFS 23,429
IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc0PART II, LINE 10
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