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Greenwater Foundation

Greenwater Foundation provides leadership of marine conservation and humanitarian efforts undertaken by diverse organizations (governments, universities, NGOs, and private companies) by providing coordination of affordable vessels and science …

Science & Technology Arlington, VA EIN: 921506279 (IRS) Sign up to see website
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70
Integrity Assessment
Strong transparency
70/100 · methodology

About Greenwater Foundation

Greenwater Foundation accelerates marine conservation through science, technology, and collaboration — connecting researchers, vessels, and ocean data worldwide.

Founded
Headquarters
Arlington, VA
Foundation type
Publicly-supported charity (509(a)(2))
NTEE code
U21
IRS subsection
501(c)(03)
Ruling date
Size
medium

Verified certifications

Confirmed against the issuing authority - not self-reported.

IRS Tax-Deductible since 2023

Mission

Greenwater Foundation provides leadership of marine conservation and humanitarian efforts undertaken by diverse organizations (governments, universities, NGOs, and private companies) by providing coordination of affordable vessels and science assets to achieve more efficient operations and larger collaboration all over the world.

Focus areas & reach

· What they work on and where
Cause tags
SDG alignment The 17 UN Sustainable Development Goals (SDGs) are the global agenda for ending poverty, protecting the planet, and ensuring prosperity by 2030. We tag each charity to the goals its work advances.

How it stacks up against peers

· vs. 8 similar science & technology in United States
Program spending This charity: 90%
Peer average: 81%
Integrity Assessment This charity: 70
Peer average: 90

Concerns

· None found
No red flags found
Screened for IRS revocation history, Open investigations, Governance scandals, Related-party deals, Excessive exec comp.

Where every $1 goes

· FY2024 · IRS 990 (FY2024)
$0.90
Program$0.90
90% to programs beats the peer average (81%) and beats the Charity Navigator "highly efficient" threshold (75%).

GiveRadar Analysis

Original analysis from GiveRadar's dataset of comparable organizations

GiveRadar's verified records show Greenwater Foundation with a complete profile, cross-referenced across 5 independent sources including the IRS.

  • GiveRadar has cross-referenced this organization across 5 independent sources, led by the IRS - more than 96% of similar organizations. See the sources
  • GiveRadar has verified more about this organization than about 70% of the 7,611 science & technology charities in the United States it tracks, because GiveRadar has verified its financial disclosures and its registration. Most of those have little verified data on record yet. View this cohort
  • It has more complete governance disclosure than 66% of similar organizations, because GiveRadar has verified leadership, a mission statement and a founding date. See national comparisons
GiveRadar has verified
  • government registration
  • financial records
  • disclosed leadership
  • a website
  • a donation page
  • third-party accreditation
Not yet verified by GiveRadar
  • a contact email
  • an owner-submitted profile claim

Analysis based on GiveRadar's benchmark dataset of 2026-07-03. It describes what GiveRadar has verified, not a judgment of the organization itself.

Common questions

· Auto-generated from filings + methodology

Greenwater Foundation is a registered science & technology nonprofit based in Arlington, VA, United States. It is registered with the Internal Revenue Service (IRS). It was founded in 2023. Its EIN is 921506279. According to GiveRadar's records, it holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. GiveRadar's Integrity Assessment for the organization is 70/100, which reflects how much public information is available, not whether the charity is legitimate. The organization reports $1M in annual revenue. No red flags have been detected. Recent news coverage is predominantly positive.

Greenwater Foundation's EIN (Employer Identification Number) is 921506279. This is the organization's IRS tax identification number; you can use it to verify tax-exempt status and to look up its Form 990 filings with the IRS.

Greenwater Foundation has a GiveRadar Integrity Assessment of 70/100. This score combines five components: Registration (20 pts), Financial Transparency (30 pts), Governance (20 pts), Contact Availability (10 pts), and Data Recency (20 pts), with negative adjustments for any red flags. A score of 70 ('Strong transparency') reflects well-documented governance, recent financials, named leadership, and working contact details. The charity allocates 90% of expenses to programs, which contributes positively to its score. For comparison, the average integrity assessment for science & technology charities in United States is 90/100.

Greenwater Foundation is located in Arlington, VA, United States. The organization was established in 2023 and has been active for 3 years.

Based on official tax filings, Greenwater Foundation has $1M in annual revenue. It allocates 90% of expenses to programs and services. This is above the average of 81% for science & technology charities in United States. Its revenue is below the peer average of $15M. Create a free GiveRadar account to view the complete financial breakdown with year-over-year trends.

Greenwater Foundation is classified as a Science & Technology organization, registered in United States. It operates as a Publicly-supported charity (509(a)(2)). By size, it is categorized as a medium organization. It has $1M in annual revenue.

No red flags have been detected for Greenwater Foundation. GiveRadar automatically screens charities for concerning patterns including high executive compensation, low program spending, and missing financial filings. Based on available official data, no issues have been identified.

According to GiveRadar's records, Greenwater Foundation holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. It is registered with the Internal Revenue Service (IRS). It reports that 90% of expenses go to programs (the peer average is 81%). You can donate directly through their official donation page linked on their GiveRadar profile. GiveRadar provides data for research and does not endorse any organization. A GiveRadar Integrity Assessment reflects how much public data is available, not whether an organization is safe to donate to, so it is always smart to do your own research before giving.

Greenwater Foundation accelerates marine conservation through science, technology, and collaboration — connecting researchers, vessels, and ocean data worldwide. Greenwater Foundation is classified as a science & technology organization registered in United States. The organization was founded in 2023.

Among science & technology charities registered in United States: It allocates 90% of expenses to programs, above the peer average of 81%. Its annual revenue of $1M is below the peer average of $15M.

Yes, donations to Greenwater Foundation are generally tax-deductible in the United States. Greenwater Foundation is a 501(c)(3) tax-exempt organization. Its EIN is 921506279, which you can use for tax filing purposes. Donors can typically deduct contributions on their federal income tax return if they itemize deductions. Consult a tax professional for guidance specific to your situation.

Annual revenue
$1M-$10M
90% to programs
Source: IRS 990 (FY2024) why this matters
Unlock exact figures

Filing history

1 year on file from IRS 990 (FY2024): revenue, expenses, program spending, assets, and liabilities by fiscal year.

Years on record: FY2024.
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Taxes

Tax-deductibility for donors

Donations may be tax-deductible for residents of United States under local rules. Confirm with the charity directly.

Always confirm tax treatment with the charity directly or your tax advisor before donating.

Leadership

From FY2024 filing

MA
Margaret R•••••
Executive Director

Officers & trustees (1)

Source: Public filings

See full names, roles, and stories

1 officers and trustees on file - free with a GiveRadar account.

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Latest news

From global news sources

1 article found

From news sources and the organization. Shown for transparency; news never affects the integrity score.

Activity timeline

Filings and press mentions, merged

Seabed 2030 And Greenwater Foundation Formalize Ocean Mapping Partnership - Ocean News & Technology
Mar 2026
oceannews.com
Form filed
$1.2M revenue
FY2024
IRS 990

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Cause areas in United States

How many charities work in each area, with this charity's area highlighted.

Human Services 322,679
Education 195,586
Arts & Culture 133,128
Advocacy & Civil Rights 128,026
Religion 114,636
Health 98,862
Community Development 56,086
Youth Development 53,450
Science & Technology this charity 7,612
See all cause areas in United States

Most common causes in United States

Causes charities work on most.

Community Development 235,146
Education 159,016
Religion 103,741
Arts & Culture 101,203
Human Rights 76,926
Health 65,250
Youth Development 47,775
Animal Welfare 32,425

Sources and verification

Registration and legal identity
Internal Revenue Service (IRS) - Tax Exempt Organization Search
Financial filings
IRS Form 990 filings - Fiscal year 2024 most recent on file.
Officers and trustees
Internal Revenue Service (IRS) - Tax Exempt Organization Search - 1 disclosed in the public registry.
News and media coverage
GDELT Project + Google News
Supplementary verification
ProPublica Nonprofit Explorer
Supplementary verification
Charity Navigator

Data freshness

Last updated
Jun 12, 2026
Registry checked
Jun 6, 2026
Profile completeness
85%

What we know and don't know

Exactly which public data we hold on this charity. Our score reflects transparency, not impact.

On record · 9
  • Financial data · FY2024 on record
  • Named leadership · 1 officer on file
  • Government registration · Registered with an official registry
  • Mission statement · Published
  • Official website · On record
  • Headquarters address · On file
  • Direct contact · Email or phone published
  • Tax-deductibility · Verified
  • Founding date · 2023
Not available · 2
  • Executive pay
    Top-officer pay not disclosed
  • Programs & activities
    No named programs listed by the charity

Methodology

GiveRadar builds each profile primarily from official government charity registries, supplemented where available by third-party nonprofit databases and news archives, and combines it into a single 0-100 integrity assessment. The exact sources for this charity are listed above. We don't take a cut of any donation, ever.

Read full methodology

Are you the owner or a board member?

If you represent this organization and want to correct or update its data, you can claim this listing to edit details yourself, or email [email protected] with the correct information. We review every request and respond within 30 days.

Quick facts about Greenwater Foundation

What is Greenwater Foundation?
Greenwater Foundation is a science & technology publicly-supported charity (509(a)(2)) based in Arlington, United States. Greenwater Foundation accelerates marine conservation through science, technology, and collaboration — connecting researchers, vessels, and ocean data worldwide.
When was Greenwater Foundation founded?
Greenwater Foundation was founded in 2023.
Who leads Greenwater Foundation?
Margaret Ruxton serves as Executive Director.
Where is Greenwater Foundation located?
Headquartered in Arlington, VA, United States.
What is Greenwater Foundation's annual budget?
Annual revenue for fiscal year 2024 is approximately $1M-$10M. 90% of expenses go to program services.
Is Greenwater Foundation trustworthy?
Greenwater Foundation has a GiveRadar Integrity Assessment of 70 out of 100 (Strong transparency). The score reflects public-data transparency: registration, financial disclosure, governance, contact details, and how recently data was refreshed. It does not measure program impact.
What is Greenwater Foundation's registration number?
IRS EIN: 921506279.
What is Greenwater Foundation's website?
https://greenwaterfoundation.org/