Resource
Household Hazardous Waste Collection in California
Where and how California residents drop off household hazardous waste in 2026, plus the line between residential HHW and commercial hazardous waste.
Household hazardous waste collection in California is a county-operated, publicly-funded service. Every Bay Area county runs either a permanent facility, periodic collection events, or both. Residents drop off automotive fluids, paint, cleaning products, pesticides, batteries, lamps, electronics, and home-generated sharps, all without paying at the door.
This guide covers the eight HHW categories, the Bay Area county programs and drop-off sites, the line between residential HHW and commercial hazardous waste, and the CESQG programs that let some small businesses use HHW infrastructure.
Eight Household Hazardous Waste Categories
Automotive
Used motor oil, antifreeze, brake fluid, transmission fluid, oil filters, lead-acid batteries, gasoline.
Paint and solvents
Oil-based paint, latex paint (water-based, often accepted separately), paint thinner, turpentine, mineral spirits.
Household cleaners
Drain openers, oven cleaners, ammonia, bleach concentrates, rust removers, metal polishes.
Pesticides and garden chemicals
Insecticides, herbicides, rodenticides, fertilizers with hazardous components, swimming pool chemicals.
Batteries
Alkaline batteries, lithium batteries, button cells, rechargeable batteries. Lead-acid car batteries handled separately.
Lamps and bulbs
Fluorescent tubes, CFL bulbs, HID lamps, mercury-vapor lamps. These contain mercury and are universal waste.
Electronics (e-waste)
TVs, computers, monitors, printers, cell phones, tablets. Subject to California's E-Waste Recycling Act.
Medical sharps from home users
Insulin needles, glucose lancets used by diabetic patients or veterinary pets at home. Special programs accept these as 'home-generated sharps.'
Bay Area County Programs
Alameda County
StopWaste Household Hazardous Waste Facility, 2100 East 7th Street, Oakland. Appointment required for single-family residences.
County program siteContra Costa County
RecycleSmart and Mt. Diablo Resource Recovery facilities. Multiple drop-off sites by sub-region (West, Central, East, South County).
County program siteMarin County
Marin Household Hazardous Waste Facility, San Rafael. Open Saturday and limited weekday hours; appointment required.
County program siteSan Francisco
SF Recology drop-off at 501 Tunnel Avenue. Free for residents; appointment recommended.
County program siteSan Mateo County
RethinkWaste collection events plus permanent facility at 333 Shoreway Road, San Carlos.
County program siteSanta Clara County
Santa Clara County HHW Program operates multiple permanent facilities plus collection events throughout the year. Appointment required.
County program siteSolano County
Solano County Resource Management organizes regular collection events; no permanent facility. Schedule posted seasonally.
County program siteSonoma County
Sonoma County Waste Management Agency operates the Central Disposal Site facility plus periodic collection events.
County program siteNapa County
Napa Recycling and Waste Services facility on Devlin Road accepts residential HHW year-round.
County program siteHHW vs Commercial Hazardous Waste
| Aspect | Household HHW | Commercial hazardous waste |
|---|---|---|
| Volume | Quantities typical of residential use, often less than 5 gallons per visit | Per California H&SC 25218, businesses generating any hazardous waste are commercial generators and cannot use HHW programs except CESQG-eligible facilities |
| Cost | Free for residents (taxpayer-funded) | Per-container or per-pound fees through commercial hazardous waste service |
| Documentation | No manifest required for residents | Federal e-Manifest required for SQG and LQG; CESQG simplified records |
| Eligibility | California residents only; some counties limit by zip code or county of residence | Any commercial generator with EPA Hazardous Waste ID number |
CESQG Programs for Very Small Businesses
- CESQGs are commercial generators producing less than 100 kg (220 lb) of hazardous waste per month.
- Some counties offer CESQG drop-off programs at HHW facilities, but advance registration and reduced quantity limits apply.
- Eligibility varies by county. Alameda County, Santa Clara County, and San Mateo County all run active CESQG programs.
- CESQG programs typically charge a fee (lower than commercial service but higher than free HHW), require advance scheduling, and limit which waste types are accepted.
- If your business is not CESQG-eligible (volume too high, waste type not accepted, county program not available), you need a commercial hazardous waste service.
If you generate hazardous waste at work, you need commercial service
Household programs are not for businesses. BayArea Compliance is a California-headquartered hazardous waste service for clinics, labs, auto shops, manufacturers, and any commercial generator.
Commercial hazardous waste serviceFrequently Asked Questions
Household hazardous waste (HHW) is hazardous waste generated by residential households in quantities typical of residential use. Common categories include automotive fluids, paints and solvents, household cleaners, pesticides, batteries, fluorescent lamps, electronics, and home-use medical sharps. HHW is exempt from many federal RCRA regulations but is still regulated under California law and must be disposed of through approved channels.
Every Bay Area county operates either a permanent HHW facility, periodic collection events, or both. Major facilities include StopWaste in Oakland (Alameda County), Recology at 501 Tunnel Ave in San Francisco, the Santa Clara County HHW Program with multiple sites, RethinkWaste's San Carlos facility (San Mateo County), and Napa Recycling on Devlin Road. Most facilities require appointments.
Yes, for residents. HHW collection programs in California are funded by waste-management fees built into local property taxes or trash service rates. You do not pay at drop-off if you are a county resident bringing residentially-generated HHW within program limits.
Household hazardous waste (HHW) is hazardous waste from residential sources, in residentially-typical quantities, and exempt from federal RCRA generator requirements. Commercial hazardous waste is anything generated by a business or institution, subject to RCRA and California DTSC rules regardless of volume. Businesses cannot use HHW programs except where county CESQG programs explicitly allow small-volume commercial drop-off.
Sometimes, through CESQG (Conditionally Exempt Small Quantity Generator) programs. Some counties operate CESQG drop-off at their HHW facilities for businesses generating less than 100 kg (220 lb) per month. CESQG programs typically require advance registration, charge fees, and limit accepted waste types. Check your county HHW website for CESQG eligibility and process.
Home-generated medical sharps from insulin therapy or pet veterinary care are subject to special handling. Many California pharmacies accept sharps in approved containers, and some HHW facilities accept them as home-generated sharps. Never put sharps in regular trash or recycling. For commercial healthcare facilities, regulated medical waste is a separate framework under California's Medical Waste Management Act.
No. HHW programs are funded for residential use, and accepting commercial volumes would deplete the budget and create regulatory complications. If you have commercial-scale waste, even a single 55-gallon drum, you need a permitted commercial hazardous waste service. BayArea Compliance provides this for facilities across California.
More in this series
This guide is part of our Hazardous Waste series.
Start here: the complete guide
Hazardous Waste Disposal in California (Complete Guide)
DTSC vs federal RCRA, generator categories, CUPA enforcement, manifesting, treatment options.
In this series
Hazardous Waste Collection in the Bay Area
Where to take hazardous waste in the 9-county Bay Area, generator vs household pathways.
In this series
Non-Hazardous Industrial Waste Removal
What qualifies as non-hazardous, characterization for borderline streams, and disposal options.
In this series
Hazardous Waste Disposal Companies in the Bay Area
How to evaluate hazardous waste vendors, CUPA registration, and what to expect from a service contract.
In this series
Hazardous Waste Labels in California (DOT + Cal-EPA Guide)
Required label elements, generator info, accumulation start dates, and the most-cited labeling violations.
Part of our hazardous waste in California pillar guide. Reviewed by Lisa Puckett, CSP, 2025 NRC Recycler of the Year, SWANA Vice Director, 20+ years in EH&S.
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