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Oro Loma Named CWEA “Plant of the Year”

Oro Loma Sanitary District has been awarded “Plant of the Year” in the Medium Plant category (5–20 MGD) by the California Water Environment Association (CWEA). This top statewide honor recognizes the District’s outstanding compliance record, pioneering treatment innovations, and unwavering commitment to environmental stewardship.

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We are committed to providing the highest value in wastewater and solid waste services to our customers while protecting the San Francisco Bay and our communities.

Our services do not include providing drinking water.

For 24/7 emergency response, please call 510-276-4700.

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Helpful Videos

Our videos contain valuable information for residents and businesses in the Oro Loma Sanitary District.

Helpful Videos

Our videos contain valuable information for residents and businesses in the Oro Loma Sanitary District.

District map of Oro Loma Sanitary District showing service area boundaries across San Lorenzo, Ashland, Cherryland, Fairview, and nearby cities.
District map of Oro Loma Sanitary District

ORO LOMA DISTRICT

Our Community

Oro Loma Sanitary District provides wastewater collection and treatment, and solid waste collection services to 45,000 residents and businesses. Our service area includes San Lorenzo, Ashland, Cherryland, Fairview, and portions of the City of San Leandro, the City of Hayward, and Castro Valley.

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Important Numbers

  • (510) 276-4700 Oro Loma Sanitary District Office and 24/7 Emergency Response
  • (510) 613-8710 WM of Alameda County
  • (877) STOPWASTE Alameda County Recycling Hotline
  • (800) 606-6606 Alameda County Household Hazardous Waste

Tour Our Facility

See what happens inside a Wastewater Treatment Plant and how we protect the San Francisco Bay.

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video!

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