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Household hazardous waste drop-off in Contra Costa County, California

In Contra Costa County, programs may be called HHW, household toxics or toxics roundup collection — the listings below use each agency's own name.

4 listings in El Cerrito, Martinez, Pittsburg, Richmond. A county site may be open only to residents of that county or of member cities.

Call ahead. Hours, fees, residency rules, appointments and accepted materials change. Check the official page or call before you go. Never mix chemicals, and keep products in their original containers. Every listing links to its official source.

Listings in Contra Costa County

• El Cerrito Recycling and Environmental Resource Center Household Hazardous Waste (Tuesdays)

  7501 Schmidt Lane, El Cerrito, CA

  • Permanent drop-off
  • Pesticides & garden chemicals
  • Propane cylinders
  • Household chemicals & cleaners
  • Paint
  • Pool chemicals
  • Other household hazardous waste

  Hours: Tuesdays only for household hazardous waste, 9 a.m.–4 p.m., closed 12:00–12:30 p.m. for lunch.

  Source: RecycleMore (West Contra Costa Integrated Waste Management Authority) · checked November 9, 2026

• Central Contra Costa Sanitary District Household Hazardous Waste Collection Facility

  4797 Imhoff Place, Martinez, CA

  • Permanent drop-off
  • Other household hazardous waste

  Hours: Monday–Saturday, 7 a.m.–2 p.m. The reuse room is open Monday–Saturday, 7 a.m.–1:30 p.m. See the district’s hours and directions page for holiday closures. Operations may pause when wildfire-smoke air quality is unhealthy.

  Source: Central Contra Costa Sanitary District · checked November 9, 2026

• Delta Household Hazardous Waste Collection Facility

  2550 Pittsburg-Antioch Hwy, Pittsburg, CA

  • Permanent drop-off
  • Pesticides & garden chemicals
  • Household chemicals & cleaners
  • Pool chemicals
  • Used motor oil
  • Oil filters
  • Antifreeze
  • +6 more

  Hours: Thursday, Friday and Saturday, 9 a.m.–4 p.m., except listed holidays including the period between Christmas and New Year’s.

  Source: Delta Diablo · checked November 9, 2026

• West Contra Costa County Household Hazardous Waste Facility

  101 Pittsburg Avenue, Richmond, CA

  • Permanent drop-off
  • Other household hazardous waste
  • Paint
  • Household chemicals & cleaners
  • Pesticides & garden chemicals

  Hours: Wednesday through Saturday, 9 a.m.–4 p.m., closed 12:00–12:30 p.m. for lunch.

  Source: RecycleMore (West Contra Costa Integrated Waste Management Authority) · checked November 9, 2026

More household hazardous waste listings in California