Residents Pollution Prevention


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 Reuse Room and Recycled Water Fill Station will be closed on Wednesday, April 24th for an employee event.

    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. 

      Fats, Oils and Grease (FOG)
      How to Prevent FOG from Damaging Your Home and the Environment

      Don't pour grease down drains

      Fats, oils, and grease (FOG) are a leading cause of sewer clogs and overflows, which can cause health hazards, damage home interiors, and threaten the environment.

      FOG can get into the sewer from household drains as well as from poorly maintained grease traps in restaurants and other businesses.

      Read or print out our FOG Brochure and learn more by watching the videos below:

      Fats, Oils and Grease (FOG) Fats, Oils and Grease (FOG)

      Where does grease come from?

      Most of us know grease is a byproduct of cooking. Grease is found in such things as:


      Home & Garden

      Today’s gardeners, homeowners, and pet lovers are looking for ways to manage pest problems with little or no use of toxic materials. Many are relying on a strategy called Integrated Pest Management or IPM.


      Shop Green Businesses

      The Green Business Program recognizes businesses that comply with all environmental regulations and take action to conserve resources and prevent pollution.

      Currently the Green Business Program has certified a number of businesses in Contra Costa County. To sign up to be a Green Business or to find Green Businesses in your area, go to: