Mystic River Watershed Association Inc
Mystic River Watershed Association (MyRWA) is a public charity based in Arlington, Massachusetts, formed in 1976. It works to protect and restore the Mystic River watershed and engage and educate its residents through water-quality and habitat work, climate resilience, recreation, and education.
Mystic River Watershed Association Inc at a glance
In short: Mystic River Watershed Association Inc gave $356K across 14 grants in 2025 (avg $25K), mostly in Massachusetts. 50% of 2025 grantees were new. Source: 2025 IRS Form 990.
- Annual giving (2025)
- $355,902
- -59.9% vs 2024
- Grants made (2025)
- 14
- +0.0% vs 2024
- Average grant
- $25,422
- -59.9% vs 2024
- Median grant
- $14,557
- Total assets
- $11,102,274
- +2.8% vs 2024
- New grantees (estimate)
- 50% first-time grantees (7 of 14, 2025; small sample)
- Primary geography
- Massachusetts (100% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated September 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to Mystic River Watershed Association Inc
- Contact
Mailing address: 23 Maple Street, Arlington, MA 02476
Phone: (617) 865-6580
Website: https://mysticriver.org
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Mystic River Watershed Association Inc funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was City of Boston ($130K). Together the top 10 received $332K.
Grant Size Distribution
67 grants across all recorded years
The most common grant size was under $50K: 49 grants of 67 (73%).
Geographic Focus
Where this funder awards grants
MyRWA’s work concerns the Mystic River watershed, which the organization says includes 21 cities and towns: Arlington, Belmont, Boston (Charlestown and East Boston), Burlington, Cambridge, Chelsea, Everett, Lexington, Malden, Medford, Melrose, Reading, Revere, Somerville, Stoneham, Wakefield, Watertown, Wilmington, Winchester, Winthrop, and Woburn. In its 2025 filing, all reported grant dollars went to Massachusetts recipients.
Grant Distribution by State
Share of 2025 grant dollars across all 14 itemized grants.
Cities
Is Mystic River Watershed Association Inc open to new grantees?
50%
first-time grantees, 2025
In 2025, 7 of 14 grantees (50%) were first-time recipients. With only 14 grantees, that is a small sample: one grantee more or less moves the share by about 7 points. First grants averaged $27K; repeat grants $24K. How we count
Medians: $6K first-time, $15K repeat.
Estimate from itemized grant lists in IRS Form 990 filings (2020–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2025, annual grant giving ranged from $330K (2020) to $888K (2024). In 2025 it made 14 grants totaling $356K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| City of Boston Boston, MA | Greenways | $130,000 |
| Everette Community Growers Everett, MA | Covid Safe Cooling | $67,796 |
| Friends of Belle Isle March Wiinthrop, MA | Education | $22,934 |
| Chinese Culture Connection Inc Malden, MA | EPA Collab Grant | $22,250 |
| Trustees of Tufts College Medford, MA | Clean Air | $20,000 |
| Greenroots Inc Chelsea, MA | Heat Convening | $15,146 |
| Cambridge Health Alliance Malden, MA | Clean Air | $15,000 |
| Groundwork Somerville Inc Somerville, MA | Climate Resilience | $14,113 |
| City of Medford Medford, MA | Climate Resiliance | $12,213 |
| Field of Green (Via Arthur Kurtz) Lincoln, MA | ENV. Restoration | $12,100 |
Ready to take the next step with Mystic River Watershed Association Inc?
Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $11,102,274 | $5,653,194 | $5,335,747 | $355,902 | 14 | $655,984 |
| 2024 | $10,795,076 | $6,487,669 | $6,646,070 | $888,053 | 14 | $289,818 |
| 2023 | $10,075,118 | $8,197,369 | $3,820,529 | $438,237 | 11 | $192,817 |
| 2022 | $4,843,866 | $3,691,084 | $2,810,441 | $537,047 | 13 | $64,398 |
| 2021 | $4,341,335 | $3,888,743 | $2,151,657 | $700,738 | 15 | $18,891 |
| 2020 | $2,376,260 | $2,453,216 | $1,655,154 | $329,500 | 9 | $20,764 |
| 2019 | $1,370,914 | $1,516,897 | $1,035,003 | — | — | $15,390 |
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
In its filing, MyRWA states that it works to protect and restore the watershed and engage and educate residents. Its programs include restoration and recreation; education and volunteer stewardship; and climate resilience. The organization says it uses science and advocacy to protect water quality, restore habitat, build climate resilience, connect 25 miles of paths, and improve six parks. It also reports educating more than 2,000 youth through school and after-school programming and engaging 1,800 volunteers in caring for parks.
MyRWA’s website describes work on water-quality monitoring and nature-based solutions, including green infrastructure, as well as resident-led cooling projects and wetland and salt-marsh restoration. Its 2025 grants included support for greenways, education, clean air, heat convening, climate resilience, and environmental restoration.
Among the 2025 grantees, Chinese Culture Connection describes its mission as helping Chinese immigrants and other Chinese-descended residents of Greater Boston retain and appreciate their heritage, develop bicultural fluency, and deepen others’ understanding. GreenRoots describes its work as advancing environmental justice and quality of life through community engagement, education, youth leadership, and projects and campaigns. Groundwork Somerville describes its mission as promoting walking and biking, sensible transit development, and clean waterways, and serving as a regional resource for sustainable development.
Grantmaking
In filing year 2025, MyRWA reported 14 grants totaling $355,902. Grant amounts ranged from $6,000 to $130,000, with a median of $14,556. All reported grant dollars went to recipients in Massachusetts.
The largest reported grants included $130,000 to the City of Boston for greenways; $67,796 to Everette Community Growers for COVID safe cooling; $22,934 to Friends of Belle Isle Marsh for education; $22,250 to Chinese Culture Connection for an EPA collaboration grant; and $20,000 to the Trustees of Tufts College for clean air. Other grants included $15,146 to GreenRoots for heat convening, $15,000 to Cambridge Health Alliance for clean air, and $14,113 to Groundwork Somerville for climate resilience.
MyRWA says it monitors grant-fund use by requiring each awardee to provide information about how funds were used in a survey.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Patrick Herron as Executive Director; Nasser Brahim as Director of Climate; Michelle Liebetreu as Development and Communications; and Victor Castro as Vice President and Assistant Clerk. It also lists William T. Denman, Ryan Dings, Monica Driggers, Karen Colon Hayes, Charles Holley, and Marcia Manong as board members.
Mystic River Watershed Association Inc is led by Britney Satterlee, President since 2024 (on filings since 2020); 3 of 19 officers listed in 2025 are compensated.
Officers on the 2025 filing
Britney Satterlee
President
Secretary → Baord Member, 2021
Baord Member → President, 2024
On filings since 2020
5 hrs/week
No compensation reported
Nasser Brahim
Director Climate
Vice President → President, 2022
President → Director Climate, 2025
On filings since 2020
40 hrs/week
$120K (2025)
Patrick Herron
Executive Di
On filings since 2019
40 hrs/week
$77K (2019) → $167K (2025)
Michelle Liebetreu
Development & Communications
On filings since 2024
40 hrs/week
$67K (2024) → $122K (2025)
Charles Holley
Board Member
Treasuer → Treasurer, 2022
Treasurer → Board Member, 2025
On filings since 2020
5 hrs/week
No compensation reported
John Reinhardt
Board Member
Director → Board Member, 2021
On filings since 2020
5 hrs/week
No compensation reported
Marcia Manong
Board Member
Director → Board Member, 2021
On filings since 2020
5 hrs/week
No compensation reported
Erga Pierrette
Board Member
On filings since 2021
5 hrs/week
No compensation reported
Julie Ing Stern
Board Member
Vice President → Vice President & Assistant C, 2024
Vice President & Assistant C → Board Member, 2025
On filings since 2021
5 hrs/week
No compensation reported
Kelly Ryan
Treasurer
Board Member → Treasurer, 2025
On filings since 2022
5 hrs/week
No compensation reported
Victor Castro
Vice President & Assistant Cl
Board Member → Vice President & Assistant Cl, 2025
On filings since 2022
5 hrs/week
No compensation reported
Helen Quach
Secretary
Board Member → Secretary, 2024
On filings since 2023
5 hrs/week
No compensation reported
Monica Driggers
Board Member
On filings since 2023
5 hrs/week
No compensation reported
Ryan Dings
Board Member
On filings since 2023
5 hrs/week
No compensation reported
Beatriz Gomez Mouakad
Board Member
On filings since 2024
5 hrs/week
No compensation reported
Karen Colon Hayes
Board Member
On filings since 2024
5 hrs/week
No compensation reported
William T. Denman
Board Member
On filings since 2024
5 hrs/week
No compensation reported
Prabitha Natarajan
Board Member
New on the 2025 filing
5 hrs/week
No compensation reported
Rachel Sorlien
Board Member
New on the 2025 filing
5 hrs/week
No compensation reported
Former officers (21)
- Former: Erik Hansen (2019–2024) — Board Member
- Former: Julia E. Wormser (2019–2024) — Senior Policy A
- Former: Mark Jacobson (2019–2024) — Clerk
- Former: Stephanie Carvalho (2022–2024) — Board Member
- Former: Barbara Landau (2019–2023) — Board Member
- Former: David Burson (2019–2023) — Board Member
- Former: Karl Touet (2019–2023) — Board Member
- Former: Joshua A. Weinberg (2019–2021) — Board Member
- Former: Meera Deean (2019–2021) — Board Member
- Former: Rick Olick (2019–2021) — Board Member
- Former: Shannon Ames (2019–2021) — President
- Former: Larry Feldman (2020–2021) — Board Member
- Former: Monica Nakielski (2020–2021) — Board Member
- Former: Terry Carter (2021) — Board Member
- Former: Caroline Rogers Broderick (2019–2020) — Vice President
- Former: Mark Rogers (2019–2020) — Secretary
- Former: Pamela Vanbeuekom (2019–2020) — Treasurer
- Former: Rose Fennell (2019–2020) — Director
- Former: Joshua Boyce (2019) — Secretary
- Former: Karen L. Grossman (2019) — Board Member
- Former: Lawrence Feldman (2019) — President
Data from IRS Form 990 filings, 2019–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $167K, to Patrick Herron (Executive Di). 3 officers or directors reported compensation on that filing.
Frequently asked questions about Mystic River Watershed Association Inc
How much does Mystic River Watershed Association Inc give each year?
Mystic River Watershed Association Inc gave $356K across 14 grants in 2025, according to its 2025 IRS Form 990. In 2024 it gave $888K across 14 grants.
What is Mystic River Watershed Association Inc's typical grant size?
Mystic River Watershed Association Inc's median grant in 2025 was $14,557, and its average grant was $25,422, across 14 grants on its 2025 IRS Form 990. Organizations receiving their first grant from Mystic River Watershed Association Inc that year got $27K on average.
Where does Mystic River Watershed Association Inc give grants?
Mystic River Watershed Association Inc gives mostly in Massachusetts: 100% of the grant dollars itemized on its 2025 IRS Form 990 went to recipients there. The most frequent recipient cities were Medford, MA (3 grants) and Malden, MA (2 grants).
Does Mystic River Watershed Association Inc give general operating support?
Not in 2025: none of the 14 grants with a stated purpose on Mystic River Watershed Association Inc's 2025 IRS Form 990 were described as general or operating support. Recurring purposes include "Climate Resilience" (3 grants).
Who are Mystic River Watershed Association Inc's largest grantees?
Mystic River Watershed Association Inc's largest 2025 grantees include City of Boston ($130,000), Everette Community Growers ($67,796) and Friends of Belle Isle March ($22,934), according to its 2025 IRS Form 990. Together they received 62% of its itemized 2025 grant dollars.
How large is Mystic River Watershed Association Inc?
Mystic River Watershed Association Inc reported $11.1M in total assets on its 2025 IRS Form 990. Its revenue that year was $5.7M.
What does Mystic River Watershed Association Inc fund?
In its filing, MyRWA states that it works to protect and restore the watershed and engage and educate residents. Its programs include restoration and recreation; education and volunteer stewardship; and climate resilience. See mission & focus areas ↑
How do I apply for a grant from Mystic River Watershed Association Inc?
Mystic River Watershed Association Inc has no public application process in the sources Grantable reviewed. Check mysticriver.org for current guidelines, or contact the foundation directly before submitting a request.
What is Mystic River Watershed Association Inc's EIN?
Mystic River Watershed Association Inc's EIN (Employer Identification Number) is 23-7221094. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings. Research dossier generated September 2026.
Data update history
(8)
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2020 (received by the IRS August 19, 2021)
- Updated Form 990 for fiscal year 2021 (received by the IRS October 7, 2022)
- Updated Form 990 for fiscal year 2022 (received by the IRS September 21, 2023)
- Updated Form 990 for fiscal year 2023 (received by the IRS September 29, 2024)
- Updated Form 990 for fiscal year 2024 (received by the IRS September 24, 2025)
- Added Form 990 for fiscal year 2025 (received by the IRS June 22, 2026)
- Added Form 990 for fiscal year 2019 (received by the IRS July 16, 2020)
- IRS filings on file for fiscal years 2020–2024
Live grants for the work Mystic River Watershed Association Inc funds
Environment & Animals Open opportunities, soonest deadline first.
Explore Open Grants
Browse active grant opportunities in Mystic River Watershed Association Inc's focus areas in our free grants database
Similar Funders
Funders that support many of the same organizations
Health Resources in Action Inc
Boston, MA
Health Resources in Action administers grants for funders supporting biomedical research, community health, health equity, and related community services. Its 2025 grants had a median of about $120,000, with most funding going to Massachusetts organizations; some programs serve other specified regions. The profile does not state whether it accepts unsolicited requests.
Assets
$122.5M
Grants
195
Total Given
$26.2M
Lawrence & Lillian Solomon
Wellesley, MA
The foundation funds planning, design, technical assistance, public engagement, and selected operating support for parks, greenways, trails, and public access projects, primarily in Greater Boston within Interstate 128. Its 2024 grants had a median of $1,000, though amounts ranged widely; it contributes only to preselected organizations and does not accept unsolicited funding requests.
Assets
$6.9M
Grants
46
Total Given
$522K
Merck Family Fund
Boston, MA
The Merck Family Fund supports community-led environmental, social, and economic justice work, including climate, transportation, housing, health equity, and democratic participation. Its 2024 grants ranged from $830 to $130,000, with a median of $35,000, and its current strategic focus is Massachusetts and New York. The Fund says its listed grant programs are invitation-only, though its filing describes a letter-of-inquiry and proposal process.
Assets
$64.1M
Grants
87
Total Given
$3.2M
United Way Of Massachusetts Bay Inc
Boston, MA
United Way of Massachusetts Bay funds nonprofits and community partnerships advancing economic mobility, education, youth success, safe housing, and basic-needs support, with a focus on eastern Massachusetts. In 2025, grants ranged from $5,000 to $1.4 million, with a median award of $50,000. It has offered specific application processes, but whether it accepts unsolicited requests generally is not stated.
Assets
$60.9M
Grants
351
Total Given
$30.0M
Third Sector New England Inc
Boston, MA
Third Sector New England supports nonprofits and charitable projects working toward a more just and equitable society, including early education and educator compensation, rest and respite, and organizational capacity-building. Its 2025 grants had a median of $82,000, ranging from $6,000 to $1,086,031, and went to recipients across multiple states, with the largest shares in Colorado, Massachusetts, and Louisiana.
Assets
$116.1M
Grants
94
Total Given
$12.5M
Akamai Foundation Inc
Cambridge, MA
Akamai Foundation Inc funds STEM education and technology career pathways for underserved learners, employee-led community programs, and disaster relief. Its 2024 grants ranged from $500 to $225,000, with a median of $10,000, and its grantmaking is global. It does not accept unsolicited funding requests and gives only to preselected charitable organizations.
Assets
$62.6M
Grants
118
Total Given
$2.7M
More similar funders
More Funders in Massachusetts
Cite this profile
Grantable. (2026). Mystic River Watershed Association Inc funder profile. GrantGraph. Retrieved October 23, 2026, from https://grantable.co/funders/mystic-river-watershed-association-inc-morg_e0898e46d6774c2d973c02d2f582d961
BibTeX
@misc{grantable_237221094_2026,
author = {{Grantable}},
title = {{Mystic River Watershed Association Inc funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/mystic-river-watershed-association-inc-morg_e0898e46d6774c2d973c02d2f582d961},
note = {Accessed 2026-10-23. Data licensed CC BY 4.0}
}The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.
Figures come from Mystic River Watershed Association Inc's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
Mystic River Watershed Association Inc down — hundreds of funders to go?