Nonprofits in Mad River, California

Nonprofits in Mad River, California. Browse 5 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.

Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.

Nonprofit profiles

  1. Humboldt Trinity Recreation Alliance

    EIN 680407486 · Headquarters: MAD RIVER, CA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Modern Health Solutions

    EIN 834681732 · Headquarters: Mad River, CA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Ruth Mutual Water Co Inc

    EIN 680449849 · Headquarters: Mad River, CA, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  4. Southern Trinity Area Rescue Inc

    EIN 331810165 · Headquarters: MAD RIVER, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  5. Southern Trinity Volunteer Fire Department

    EIN 911839905 · Headquarters: MAD RIVER, CA, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990