Household Hazardous Waste Collection Facility


Household Hazardous Waste Collection Facility

Hazardous waste generated by residents and businesses can reach our waterways through runoff, sanitary sewers, storm drains, landfills, and can pollute our local water environment. The Household Hazardous Waste (HHW) Collection Facility helps prevent this pollution through reuse, recycling, and proper disposal of hazardous waste. 

Residents may drop off household hazardous waste at no charge, with no appointment needed. 

Small businesses must schedule an appointment and pay a small fee to dispose of their hazardous waste. Learn more and schedule an appointment.

    Opening Days and Hours

    The HHW Collection Facility is located at 4797 Imhoff Place in Martinez (view map). 

    When the air quality index exceeds healthy standards due to wildfire smoke, we may shut down operations to maintain employee and customer safety. This page will be updated to reflect these closures.


    • Residents – no appointment needed
    • Businesses by appointment only

    Monday – Saturday, 7 a.m. – 2 p.m. (see Hours & Directions for holiday closures)

    Recycled Water Fill Station 

    Monday – Saturday, 7 a.m. – 2 p.m. 

    Reuse Room

    Monday – Saturday, 7 a.m. – 1:30 p.m. 

    Step-by-Step: How to Drop off Your Waste

    1. We can accept up to 15 gallons or 125 pounds of hazardous waste per visit, in containers no larger than five gallons.
    2. Before visiting the HHW facility, place your waste in the trunk or hatchback of your vehicle or the bed of your truck, if available for safe travel.
    3. HHW staff will retrieve the waste from your vehicle. Please remain in your vehicle unless staff asks you to open or close the trunk or tailgate. 

      Eligible Communities

      Alamo, Blackhawk, Clayton, Concord, Clyde, Danville, Lafayette, Martinez, Moraga, Orinda, Pacheco, Pleasant Hill, San Ramon, Walnut Creek, and other Central County unincorporated areas within the Central San service area.


      Pharmaceutical Disposal Program

      Pharmaceutical Disposal Program

      Central San developed its Pharmaceutical Disposal Program by partnering with the Sheriff’s Department and eight local police departments in central Contra Costa County. Households may use any of the collection sites to safely dispose of unwanted or expired medications. These sites are open to all county residents Monday through Friday, from 8:00 a.m. to 5:00 p.m.