Sewage Collection: The District collects sewage from approximately 46,000 households and 1,000 businesses.
Miles of Sewer: There are approximately 273 miles of sewer lines located in the District and maintained by it.
Lift Stations: The District has 14 sewage lift stations, which help sewage ﬂ ow through the lines to the treatment plant.
Reuse of Treated Wastewater: An annual total of 60 million gallons of treated eﬄuent is re-used for irrigation at the Skywest Golf Course, saving freshwater supplies for residents and businesses while diverting eﬄuent from the Bay.
Sewage Treatment and Disposal: The District’s treatment plant is jointly owned by Oro Loma Sanitary District (75%) and Castro Valley Sanitary District (25%). It has a permitted capacity of 20 million gallons per day, and treats an average dry weather ﬂ ow of 11.8 million gallons per day. The District treats the wastewater to a secondary level through physical, biological, and chemical processes. The treated water, called eﬄuent, is safely disposed of through a collectively-owned discharge pipe into the deep waters of San Francisco Bay. The plant produces approximately 11 dry tons of biosolids per day. These biosolids are disposed of annually and used as alternative daily cover at the Altamont landﬁ ll.
Solid Waste Activities:
The District oversees scheduled refuse collection services provided by a private collection company (Waste Management) for more than 47,000 residential and commercial customers.
The District provides residential recycling and green waste programs for the entire District, which includes the unincorporated areas of Alameda County and 40% of the City of San Leandro. These programs are intended to reduce solid waste in accordance with the California Integrated Waste Management Act of 1989 and Alameda County Measure D.
Number of Employees: FY 2021-22: 46 | FY 2022-23: 46