County Health — Household Hazardous Waste Program
San Mateo County resident HHW appointment program. Drop-off locations and instructions are supplied through the booking process; business waste uses a separate channel.
Read the program rules, then choose an available appointment. A general county-health address is not the HHW receiving location.
The San Mateo site lists Thursday, Friday and most Saturday mornings 8 am–noon; use the booking system for available slots and the assigned location.
Official information checked October 15, 2026 · Details & sources
This program limits each vehicle/appointment to 10 gallons or 50 pounds. Make separate appointments and trips for additional waste; do not substitute another county’s 15 gallon limit.
Official information checked October 15, 2026 · Details & sources
Source checked October 15, 2026
Waste service — Make a free household HHW drop-off appointment
San Mateo County residents can bring their HHW to the drop-off location for FREE!
Saved evidence: 9dacfe56585ed276 · Agent source review