Florida · Nonprofit
BISCAYNE BAY WATERKEEPER INC
BISCAYNE BAY WATERKEEPER INC (Florida) receives grants from 77 organizations whose IRS filings report $7,219,173 to it, the largest being JOHN S AND JAMES L KNIGHT FOUNDATION ($2,000,000). 46 of them have funded it in more than one year.
- Revenue FY2025
- $4.8M
- Funders on record
- 77
- Grants received
- $7.2M
- Net assets
- $4.0M
What Biscayne Bay Waterkeeper Inc does
Mission
In 2025, biscayne bay waterkeeper (d/b/a miami waterkeeper) built on our reputation by navigating challenges, seizing opportunities, and continuing our unwavering commitment to safeguarding our precious waterways and finding local resiliency solutions to global challenges. We updated our mission and vision to better reflect the work we do and those we serve. The mission of miami waterkeeper is now to protect south florida's waters by advocating for resilient solutions grounded in science, rooted in nature, and driven by community. We have a vision for a resilient south florida that is a global leader in clean water solutions, where thriving communities and nature coexist. Since 2010, miami waterkeeper has defended the right to use and enjoy clean water. We are recognized in the community as a trusted source of information and a leading voice and advocate for biscayne bay and its surrounding watershed. Our work is effective because we employ a multi- faceted approach that includes scien
As stated on its FY2025 Form 990.
Program
Miami waterkeeper protects the water you love. We work to ensure a resilient south florida that is a global leader in clean water solutions, where thriving communities and nature coexist. We protect south floridas waters by advocating for resilient solutions grounded in science, rooted in nature, and driven by the community by employing a multidisciplinary strategy: science and research; policy and legal advocacy; education and outreach. We find local solutions to the global problems of climate change and water pollution. You might find us in a courtroom one day, and in a kayak the next; scuba diving along the reef in the morning, and bending the ear of commissioners in the afternoon. Were in classrooms and wetlands, laboratories and community events. Weve secured significant protections for our waterways by focusing on three areas: clean water, thriving habitats, and a resilient community. By fighting for clean water and our community, we are making miami a model of resilience for the worldwater win by water win. Clean water from the everglades to the ocean, from the groundwater to reefs, we tackle pollution issues throughout the biscayne bay watershed to protect south floridas…
$2,580,344 spentof which $194,727 as grants100% of program spending
The program described on its FY2025 Form 990. Program spending in total: $2,580,344.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2023 to 2024, from $2.6M to $3.9M (+51%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2017 9% · 2018 13% · 2019 23% · 2020 24% · 2021 28% · 2022 11% · 2023 22% · 2024 21% · 2025 15%. Grants only. Government contracts and fees sit inside program revenue.
98% of BISCAYNE BAY WATERKEEPER INC’s revenue is contributions — more reliant on donations than three-quarters of its peers (88% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 1 of the last 9 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Board chair
H Weitz Jordan
Chairman
As listed on its FY2025 Form 990.
Who funds it, year by year
2017 → 2023: the base broadened from 3 funders to 38 funders, grant income rose $70k → $2.1M.
14 of 77 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 18% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of BISCAYNE BAY WATERKEEPER INC’s funders (the co-funder graph). Top 30 of 77 funders by total. Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
BISCAYNE BAY WATERKEEPER INC has a broad base — no single funder exceeds 28% of grant income, and it takes 3 funders to reach half.
the vertical line marks half of all grant income — 3 funders to its left
27% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund BISCAYNE BAY WATERKEEPER INC.
Largest funder’s share by year: 2017 71% · 2018 45% · 2019 64% · 2020 31% · 2021 37% · 2022 28% · 2023 47% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
53% of BISCAYNE BAY WATERKEEPER INC's funders are still giving 3 years after their first grant; 60% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
64% of BISCAYNE BAY WATERKEEPER INC's grant income comes from Florida funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $1.3M arriving through sponsors registered in 11 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
BISCAYNE BAY WATERKEEPER INC holds deeper cash reserves than three-quarters of the 1,209 environment nonprofits its size.
this organization peer median middle 50% of peers· 1,209 environment nonprofits $1M–$10M, FY2025
Government funding BISCAYNE BAY WATERKEEPER INC receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $2.2M on record — $1.8M federal, $415k state.
- Environmental Protection Agency$1.5M
- Department of Commerce$255k
- STATE FINANCIAL ASSISTANCE - GENERAL $415k
Federal grants vs contracts are distinguished; state line items keep their reported category. Matched by name + geography (the BMF), so coverage is partial and precision-first.
Organizations like BISCAYNE BAY WATERKEEPER INC
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Florida
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
69% of spending goes to programs.
Governance
Public support
75%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for BISCAYNE BAY WATERKEEPER INC: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds BISCAYNE BAY WATERKEEPER INC?
- BISCAYNE BAY WATERKEEPER INC (Florida) receives grants from 77 organizations whose IRS filings report $7,219,173 to it, the largest being JOHN S AND JAMES L KNIGHT FOUNDATION ($2,000,000). 46 of them have funded it in more than one year.
- How many funders does BISCAYNE BAY WATERKEEPER INC have?
- IRS filings report 77 organizations giving $7,219,173 in grants to BISCAYNE BAY WATERKEEPER INC, 46 of which have funded it in more than one year.
- Who is the largest funder of BISCAYNE BAY WATERKEEPER INC?
- JOHN S AND JAMES L KNIGHT FOUNDATION is the largest funder on record, with $2,000,000 in grants. The full list of funders is on this page.
- How can an organization like BISCAYNE BAY WATERKEEPER INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Florida. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 77 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 22, 2026. What this page cannot tell you · view filing