Central Contra Costa Sanitary District
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Service Area & Statistics  

Service Area Map



Central Contra Costa Sanitary

  • Established in 1946 as a special enterprise district
  • Serves approximately 484,200 residents and 3,000 businesses in 13 cities and towns covering a 144-square mile area
  • Employs 281 dedicated professionals

Treatment Plant

  • Collects and cleans an average of 32 million gallons of wastewater per day
  • The furnace incinerates approximately 200 tons of sludge per day, reducing that volume to only 14 tons of sterile ash that is used in commercial fertilizers.
  • The cogeneration facility uses natural gas to produce electricity and steam fto power the plant. Approximately 3,200 kilowatts (80-90% of the plant’s daily power needs) are produced, saving approximately $500,000 each year on energy costs.
  • Produces approximately 600 million gallons of recycled water each year for plant operations, industrial uses, and landscape irrigation


  • Environmental Laboratory performs approximately 15,000 chemical and biological tests each year. Some tests measure on a parts-per-quadrillion range.

Collection System

  • Maintains, cleans, and repairs 1,500 miles of sewer lines and 19 pumping stations

Household Hazardous Waste Collection Facility

  • District operates a Household Hazardous Waste Collection Facility (HHWCF), established in 1997, collecting approximately two-million pounds of household hazardous waste per year, 90% of which is reused or recycled.


  • The 2017-18 Fiscal Year budget is $132.5 million.

The Communities We Serve and Links to their Websites (where available)