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Youth and community nonprofits / California / San Mateo

Swimming and water sports

Ac Water Polo Inc

A tax-exempt swimming and water sports nonprofit with a mailing address in San Mateo, California, IRS-recognized as tax-exempt since 2022.

Data as of November 8, 2026Markdown copyJSON data

IRS facts

Type: Swimming and water sports (IRS activity code N67)

Mailing city (IRS): San Mateo, California 94402

EIN: 87-1002890

Tax status: 501(c)(3), eligible to receive tax-deductible donations; IRS-recognized as tax-exempt since 2022, per IRS records posted October 13, 2026.

Revenue on its latest IRS filing: Not reported. Groups with under $50,000 in receipts usually file the e-Postcard (Form 990-N), which shows no revenue.

Check its status on IRS Tax Exempt Organization Search · Filings on ProPublica Nonprofit Explorer

Around San Mateo and its county

San Mateo County, California: the Census Bureau estimates about 140,186 children under 18 (July 1, 2024). This directory lists 320 youth and community nonprofits with a mailing ZIP code in the county, about 2.3 per 1,000 children. The count includes PTAs, arts and day care groups, so it is not a measure of places for kids.

This group's ZIP code is matched to the county that holds most of its area, so counts are approximate. County figures come from the Census Bureau's Vintage 2024 population estimates.

Licensed programs in San Mateo

70 licensed child care centers, 2 school-age programs are in state licensing records and listed in the BackPR finder. The examples below are not related to this organization.

licensed child care center

A+ IMMERSION PRESCHOOL

San Mateo, CA

State record

licensed child care center

A+ IMMERSION PRESCHOOL II

San Mateo, CA

State record

licensed child care center

ANNE CAMPBELL CHILD DEVELOPMENT CENTER

San Mateo, CA

State record

licensed child care center

BERESFORD MONTESSORI

San Mateo, CA

State record

licensed child care center

BERESFORD MONTESSORI ACADEMY INC.

San Mateo, CA

State record

licensed child care center

BRIGHT HORIZONS AT SAN MATEO

San Mateo, CA

State record

California background check rules for youth programs · How BackPR works for amateur sports nonprofits

Questions about Ac Water Polo Inc

What is Ac Water Polo Inc's EIN?

Ac Water Polo Inc's EIN (Employer Identification Number) is 87-1002890. 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 Ac Water Polo Inc a nonprofit?

Yes. The IRS lists Ac Water Polo Inc in San Mateo, California as tax-exempt under section 501(c)(3), recognized since 2022. 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 Ac Water Polo Inc tax-deductible?

Yes, the IRS lists gifts to Ac Water Polo Inc 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 Ac Water Polo Inc do?

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

Do you run this organization?

You can add your programs, season dates, ages, prices, registration link and logo to this page, or ask us to remove it. BackPR's free plan for 501(c)(3)s handles online registration, payments, waivers and attendance. No subscription and no BackPR fee on what families pay (card processing fees from Stripe still apply).

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Free forms for amateur sports nonprofits

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More amateur sports nonprofits in San Mateo

All youth and community nonprofits in San Mateo

Source: IRS Exempt Organizations Business Master File, posted October 13, 2026. We list 501(c)(3) organizations whose IRS activity code is youth development, amateur sports, camps and recreation, parent-teacher groups, children's services, child day care or arts education. We show the city and ZIP code only, never a street address or contact person. A listing is not an endorsement.

Data as of November 8, 2026. Sources: IRS Business Master File (posted October 13, 2026), U.S. Census Bureau population estimates (July 1, 2024), state child care licensing records in the BackPR finder. Growth labels, ranks and percentiles are BackPR's own calculations.

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