Charities United States Science & Technology Greenwater Foundation
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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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63
Integrity Assessment
Partial transparency
63/100 · 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
Science & Technology · NTEE U21
Cause tags

How it stacks up against peers

· vs. 8 similar science & technology in United States
Program spending This charity: 90%
Peer average: 11%
Integrity Assessment This charity: 63
Peer average: 89

Red flags

· All clear
IRS revocation history
OFAC / EU / UN sanctions
Open investigations
Governance scandals
Related-party deals
Excessive exec comp

Where every $1 goes

$0.90
Program expenses$0.90 ($510,800)
90% to programs beats the peer average (11%) and beats the Charity Navigator "highly efficient" threshold (75%).

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. It has a GiveRadar Integrity Assessment of 63/100 (Partial transparency), indicating some public data is available but key signals are missing. This is below the average of 89/100 for science & technology charities in United States. The organization reports $1M in annual revenue. No red flags have been detected.

Greenwater Foundation has a GiveRadar Integrity Assessment of 63/100. 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 63 ('Partial transparency') means some public data is on file but key signals are missing - worth a closer look before donating. 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 89/100.

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 11% for science & technology charities in United States. Its revenue is below the peer average of $14M. 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.

Greenwater Foundation has a GiveRadar Integrity Assessment of 63/100. We recommend reviewing the full profile before making a donation decision. The organization is overseen by the IRS. 90% of expenses go to programs. The peer average is 11%. You can donate directly through their official donation page linked on their GiveRadar profile. GiveRadar provides data for research purposes and does not endorse any organization. Always do your own due diligence.

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: Greenwater Foundation's GiveRadar Integrity Assessment of 63/100 is below the peer average of 89/100. It allocates 90% of expenses to programs, above the peer average of 11%. Its annual revenue of $1M is below the peer average of $14M.

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.

Verified against 5 official sources, last refreshed .

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

MA
Margaret Ruxton
Executive Director

Officers & trustees (1)

Source: Public filings

MA
Margaret R•••••
Executive Director
Full names, contact details & compensation

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Latest news

From global news sources

No recent news coverage found

News coverage will appear here when articles mention this organization.

Activity timeline

Filings and press mentions, merged

Form filed
$1.2M revenue
FY2024
IRS_990

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Peer charities

Other science & technology in United States, by integrity assessment

Charity Score Revenue Program %
Greenwater Foundation This page 63 $1.2 million 90%
Bioinnovations Institute 89 $1.3 million 91%
Collaborative for Leadership in Ayres Sensory Integration 89 $1.8 million -
Blue Marble Space 89 $5.1 million -
Corrim Consortium for Research on Renewable Industrial Materials 89 $2.4 million -
Freshwater Society 89 $1.4 million 0%
Sigma Xi the Scientific Research Honor Society Inc 89 $4.9 million -
Mind Research Institute Inc 89 $5.7 million -
Science Communication Lab Inc 89 $2.2 million -

Sources and verification

Refreshed

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.
Supplementary verification
ProPublica Nonprofit Explorer
Supplementary verification
Charity Navigator

Data freshness

Last updated
May 27, 2026
Profile completeness
75%

What we don't know

Honest gaps - our score reflects transparency, not impact

Programs & projects
No named programs listed by the charity
Operating reach
Countries where programs run not specified

Methodology

GiveRadar combines public registry filings, ProPublica Nonprofit Explorer, Charity Navigator, GuideStar, and news archives into a single 0-100 integrity assessment. We don't take a cut of any donation, ever.

Read full methodology

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, 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 63 out of 100 (Partial 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/