# Atherton Aquatics Foundation

Swimming and water sports nonprofit in Atherton, California 94027. EIN 90-0871636. Data as of November 8, 2026.

Page: https://backpr.com/find/nonprofit/900871636-atherton-aquatics-foundation

## Mission (the organization's own words)

> To deliver quality aquatic programs and activities that are accessible to boys and girls of the bay area.

Source: Form 990, year ending Sep 2025: https://projects.propublica.org/nonprofits/organizations/900871636/202513399349300341/full

## IRS facts

- Type: Swimming and water sports (IRS activity code N67)
- Tax status: 501(c)(3), contributions deductible, recognized 2013
- Source: IRS Business Master File, posted October 13, 2026: https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract-eo-bmf

## Finances (IRS Form 990 e-file data)

| Year ending | Revenue | Expenses | Assets | Net assets | Employees | Volunteers | Source |
|---|---|---|---|---|---|---|---|
| Sep 2025 | $196,070 | $287,546 | $16,744 | -$13,256 | 0 | 7 | [Form 990](https://projects.propublica.org/nonprofits/organizations/900871636/202513399349300341/full) |
| Sep 2023 | $233,640 | $252,320 | $106,577 | $103,307 | 0 | 6 | [Form 990](https://projects.propublica.org/nonprofits/organizations/900871636/202440299349301419/full) |
| Sep 2021 | $217,600 | $175,503 | $84,217 | $84,217 | 0 | 8 | [Form 990](https://projects.propublica.org/nonprofits/organizations/900871636/202220389349300412/full) |

Expense split, year ending Sep 2025: programs $283,595 (99%), management $3,951 (1%), fundraising $0 (0%).

Revenue sources, year ending Sep 2025: gifts and grants $196,070, program fees $0, investment income $0.

Growth label: **Steady** (about -3% a year, Sep 2021 to Sep 2025). Growth label: we compare total revenue on the oldest and the newest return shown above. Growing means revenue rose by more than 10% a year on average, Shrinking means it fell by more than 10% a year, and Steady means a change between -10% and +10% a year. The rate is the compounded yearly average between the two returns, so it hides ups and downs in between (see the table). We only label groups with returns at least a year apart and at least $5,000 of revenue on the oldest one. This is our own calculation, not an IRS rating or a judgment of quality.

## How it compares

- Revenue rank: 1 of 4 amateur sports nonprofits in Atherton.
- Revenue $196,070 is higher than roughly 60 to 70% of 2,432 amateur sports nonprofits in California; median $143,571.
- Source: IRS Business Master File, posted October 13, 2026; BackPR analysis.

## Local context

- San Mateo County, California: about 140,186 children under 18 (U.S. Census Bureau, July 1, 2024): https://www2.census.gov/programs-surveys/popest/datasets/2020-2024/counties/asrh/cc-est2024-agesex-all.csv
- 320 youth and community nonprofits in this directory in the county: 2.3 per 1,000 children.
- Licensed programs in Atherton: 8 licensed child care centers, 4 school-age programs: https://backpr.com/find/california/atherton
- California rules: https://backpr.com/resources/states/california

## Questions

**What is Atherton Aquatics Foundation's EIN?**

Atherton Aquatics Foundation's EIN (Employer Identification Number) is 90-0871636. It is the nine-digit number the IRS uses to identify the organization. Source: IRS Exempt Organizations Business Master File posted October 13, 2026.

**Is Atherton Aquatics Foundation a nonprofit?**

Yes. The IRS lists Atherton Aquatics Foundation in Atherton, California as tax-exempt under section 501(c)(3), recognized since 2013. This is from the IRS Business Master File posted October 13, 2026. Status can change, so check its current status on the IRS Tax Exempt Organization Search before you donate.

**Are donations to Atherton Aquatics Foundation tax-deductible?**

Yes, the IRS lists gifts to Atherton Aquatics Foundation as tax-deductible (IRS Business Master File posted October 13, 2026). How much you can deduct depends on your own taxes, and this is not tax advice. Check its current status on the IRS Tax Exempt Organization Search before you donate.

**What does Atherton Aquatics Foundation do?**

In its own words on its Form 990 for the year ending Sep 2025: "To deliver quality aquatic programs and activities that are accessible to boys and girls of the bay area." The IRS classifies it as: Swimming and water sports.

**How much money does Atherton Aquatics Foundation take in?**

For the year ending Sep 2025, Atherton Aquatics Foundation reported total revenue of $196,070 and total expenses of $287,546 on its Form 990 (IRS Form 990 e-file data).

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Data as of November 8, 2026. Sources: IRS Business Master File, IRS Form 990 series e-file data, U.S. Census Bureau. No officer or staff names are published.