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Coalition

Waterkeeper Alliance

“To fight for every community’s right to clean water.”

Home groundNew York, NY
Founded1999
KindCoalition 501(c)(3)
Led byMarc Yaggi

Every way to help ↓

The origin

How they started

Waterkeeper Alliance is the hub of a worldwide movement of local Waterkeeper groups who patrol and defend specific rivers, bays, and coastlines, including the public waters running through forests and parks. It grew out of the Hudson River’s Riverkeeper and was founded in 1999 by a coalition of those early groups. By 2019 the network had grown to roughly 350 Waterkeeper organizations across 46 countries. It runs out of New York City.

Every year they sign one sentence and file it with the federal government: “TO PROTECT OUR RIGHT TO CLEAN WATER IN COMMUNITIES AROUND THE WORLD.”

Where the money went, FY2025

The work, and what it cost

Guarding the water

$2.4M

THE REMAINDER OF OUR PROGRAMS INCLUDES PROMOTING THE WATERKEEPER METHOD OF ADVOCACY AND ISSUES OF COMMON CONCERN TO WATERKEEPER GROUPS THROUGH DIGITAL COMMUNICATIONS, PRINT PUBLICATIONS, AND OTHER MEDIA; LICENSING NEW WA...

Including $351,057 granted onward, most of it $42,000 to Riverkeeper.

Read it as they filed it
ALL OTHER PROGRAMS:THE REMAINDER OF OUR PROGRAMS INCLUDES PROMOTING THE WATERKEEPER METHOD OF ADVOCACY AND ISSUES OF COMMON CONCERN TO WATERKEEPER GROUPS THROUGH DIGITAL COMMUNICATIONS, PRINT PUBLICATIONS, AND OTHER MEDIA; LICENSING NEW WATERKEEPER GROUPS; PROTECTING THE TRADEMARKED WATERKEEPER FAMILY OF NAMES; ADVOCATING FOR STRONGER ENVIRONMENTAL REGULATIONS, INCLUDING LEGISLATION SUCH AS THE CLEAN WATER RESTORATION ACT; AND UTILIZING EVENTS AND PUBLIC OUTREACH CAMPAIGNS TO INCREASE AWARENESS FOR THE WATERKEEPER MOVEMENT, THREATS TO CLEAN WATER, AND HEALTHY ECOSYSTEMS VIA OUR CLEAN WATER DEFENSE CAMPAIGN. A SIGNIFICANT AREA OF ADVOCACY IS WATERKEEPER ALLIANCE'S CLIMATE AND SAFE ENERGY CAMPAIGN. THE CAMPAIGN'S FOCUS IS TO COMBAT THE GLOBAL CLIMATE CRISIS AND ADVOCATE FOR A NO-CARBON FUTURE. WATERKEEPER ALLIANCE ENGAGES IN LOCAL, NATIONAL, AND INTERNATIONAL EFFORTS BUILT AROUND LEGAL ADVOCACY, GRASSROOTS MOBILIZATION, AND AGGRESSIVE MEDIA ATTENTION AND PUBLIC EDUCATION TOWARD A NO-CARBON FUTURE THAT UTILIZES CLEAN AND SAFE ENERGY.

IRS Form 990 Part III, fiscal year 2025, signed under penalty of perjury.

Pressing the policymakers

$914K

GLOBAL CONFERENCE& REGIONAL SUMMITS CORRECTED LANGUAGE - REGIONAL MEETINGS AFFORD WATERKEEPER GROUPS THE OPPORTUNITY TO DEVELOP REGIONAL ADVOCACY STRATEGIES, SHARE RESOURCES, AND CONTINUE CAPACITY BUILDING AND TECHNICAL...

Including $42,306 granted onward.

Read it as they filed it
GLOBAL CONFERENCE AND REGIONAL SUMMITS:GLOBAL CONFERENCE& REGIONAL SUMMITS CORRECTED LANGUAGE - REGIONAL MEETINGS AFFORD WATERKEEPER GROUPS THE OPPORTUNITY TO DEVELOP REGIONAL ADVOCACY STRATEGIES, SHARE RESOURCES, AND CONTINUE CAPACITY BUILDING AND TECHNICAL LEARNING. A GLOBAL CONFERENCE WAS HELD IN SEPTEMBER 2024.

IRS Form 990 Part III, fiscal year 2025, signed under penalty of perjury.

Pure Farms Pure Waters Campaign

$588K

SEE SCHEDULE O.

Including $46,026 granted onward.

Read it as they filed it
PURE FARMS PURE WATERS CAMPAIGN: SEE SCHEDULE O.

IRS Form 990 Part III, fiscal year 2025, signed under penalty of perjury.

Follow the dollar

78 cents of every dollar goes to the work

78¢
78¢ the work10¢ keeping the lights on12¢ finding the next member

Read it as a snapshot, not a scorecard. Splits move year to year with grants and campaigns, and healthy shops live all across this range.

Backed on the record by William & Flora Hewlett Foundation, latest filing FY23.

$5,743,844 programs, $695,550 management, $881,828 fundraising. Form 990, FY2025.

The people

Who does the work

0paid staff
17volunteers last year
17board members
27years on the ground
Marc YaggiChief Executive OfficerComp $278,187, FY2025
Mary Beth PostmanDeputy DirectorComp $250,231, FY2025
Daniel EstrinGeneral Counsel/Legal DirectorComp $221,843, FY2025
Glenn RinkBoard ChairVolunteer, 3 hrs a week, $0

Chairs the 17-member board.

Honesty note: leadership comes from each year’s federal filing, so it can run a year behind. Orgs that claim their page can update it same-day. Work at WKA? Claim this page.

Those 17 volunteers are people who decided this ground was theirs to defend. If WKA is fighting for your place too, the matchmaker will find your way in.

Make it 18

The filings

14 years of filings

14 years of filings

Total revenue by fiscal year, as filed. Point at the line for any year.

$10M$20M$8.5M FY2520112025
Total revenue by fiscal year
YearRevenue
2011$3,295,505
2012$4,417,359
2013$4,056,835
2014$10,728,210
2015$9,921,169
2016$16,365,758
2017$20,082,608
2018$17,695,017
2019$15,589,366
2020$17,327,128
2021$11,721,218
2022$15,198,182
2023$8,822,541
2025$8,517,767

From $3.3M in 2011 to $8.5M in FY25, across 14 public filings.

Fights alongside Center for Biological Diversity (1 shared case), Environment America (1 shared case), Southern Environmental Law Center (1 shared case) and Surfrider Foundation (1 shared case). Same case, same side, on the federal docket.

The record

On the Hill

Waterkeeper Alliance has hired federal lobbyists: 6 filings from 2023 to 2024, naming 1 bill. The filings, at the Senate.

Most filed on environment/superfund.

Stand with Waterkeeper Alliance

27 years on the ground, 17 volunteers, 78 cents of every dollar on the line. That is who is holding it. There is room for one more.

Sources and methodFinancials, headcounts, and program text: IRS Form 990, FY2025 and 13 prior filings via ProPublica Nonprofit Explorer, EIN 13-4071318. Leadership and compensation: Form 990 Part VII and the return’s signature block, FY2025 filing. Grantees: Schedule I, same filing. Allies: co-litigation edges derived from the same dockets, same case and same side. Funders: the funders’ own returns (Schedule I and 990-PF Part XV) via ProPublica, names and years only. Lobbying: Senate LDA filings naming WKA as client or registrant, read from the MTJP LDA corpus. Org-reported figures are always labeled. Data verified as of 2026-09-23. Nothing on this page is pay-to-play.