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Household Hazardous Waste (HHW) Program

Environmental Health Services

What is household hazardous waste?

Household hazardous waste (HHW) is leftover household products that are toxic, flammable, corrosive, or reactive — like paint, batteries, cleaners, pesticides, and automotive fluids. These items can harm people, pets, and the environment if they go in the trash, down the drain, or into the storm drain.

San Mateo County’s HHW Program offers free and safe disposal of these products for San Mateo County residents. You can schedule an appointment online or by calling 650-372-6200.

Make an HHW Drop-Off Appointment

Book your appointment to safely dispose of paint, batteries, solvents and other household hazardous waste at San Mateo County’s drop-off facility.

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Accepted/Unaccepted Waste

Learn which types of waste are and are not accepted in the HHW Program.

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Curbside Pick-Up Options

Find details on your residential curbside collection services, including recycling, compost, trash and used oil/filter pickup options in San Mateo County.

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Free Product Give Away Program

Find details on county events offering free compost bins, reusable bags and other products to help residents reduce waste and support environmental sustainability.

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Recycle Batteries Right

Locate convenient, free drop-off locations for household batteries throughout San Mateo County to ensure safe and responsible disposal.

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E-Vapes

Find information about e-cigarettes and vapes, including health risks and safe disposal options.

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Where to Recycle Fluorescent Lights

Find free drop-off locations for recycling fluorescent lamps, bulbs and tubes across San Mateo County to prevent hazardous waste and promote environmental safety.

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MOVING? What you need to know about household hazardous waste

Find essential tips and rules for ensuring safe, clean and proper waste disposal during your move in or out of San Mateo County residences.

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Middle & High School Education Program

Explore educational resources and workshops to teach students and staff how to safely manage and dispose of household hazardous waste.

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Drop-off is by appointment only

Walk-ins are not accepted. Appointments are free for all San Mateo County residents. Schedule your appointment online or call 650-372-6200.

Schedule Your Free Appointment

How it works

1

Book your appointment

Schedule a free appointment online or by phone.

2

Pack it up safely

Keep products in original containers and never mix them. Limit 15 gallons or 125 lbs. per trip, in containers 5 gallons or smaller (state law).

3

Drive in, stay in your vehicle

Put everything in your trunk and stay in your vehicle. Our staff will unload it for you.

Other Free Disposal Options

Local drop-off locations: Find convenient recycling and disposal options for batteries and fluorescent lights.

Curbside pickup: Some cities offer battery pickup, and select cities offer used oil pickup on your regular recycling or garbage collection day. Check curbside options.

Are you a business? Small businesses can use the Very Small Quantity Generator (VSQG) Program.