# Menlo Mavens Masters Water Polo

Swimming and water sports nonprofit in Menlo Park, California 94025. EIN 87-1819317. Data as of November 8, 2026.

Page: https://backpr.com/find/nonprofit/871819317-menlo-mavens-masters-water-polo

## IRS facts

- Type: Swimming and water sports (IRS activity code N67)
- Tax status: 501(c)(3), contributions deductible, recognized 2021
- Source: IRS Business Master File, posted October 13, 2026: https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract-eo-bmf

## 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 Menlo Park: 28 licensed child care centers, 4 school-age programs: https://backpr.com/find/california/menlo-park
- California rules: https://backpr.com/resources/states/california

## Questions

**What is Menlo Mavens Masters Water Polo's EIN?**

Menlo Mavens Masters Water Polo's EIN (Employer Identification Number) is 87-1819317. 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 Menlo Mavens Masters Water Polo a nonprofit?**

Yes. The IRS lists Menlo Mavens Masters Water Polo in Menlo Park, California as tax-exempt under section 501(c)(3), recognized since 2021. 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 Menlo Mavens Masters Water Polo tax-deductible?**

Yes, the IRS lists gifts to Menlo Mavens Masters Water Polo 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 Menlo Mavens Masters Water Polo do?**

The IRS classifies Menlo Mavens Masters Water Polo as: Swimming and water sports. It has not filed a Form 990 or 990-EZ with a mission statement that we have loaded.

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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.