Safe Waste Disposal
San Mateo County’s Household Hazardous Waste (HHW) Program helps residents reuse, recycle, or responsibly manage residential hazardous waste for free. County residents may drop-off a full range of HHW at collection events year-round every Thursday, Friday, and Saturday (except major holiday weekends).
San Mateo County now has over 50 medicine disposal locations available for residents to dispose of medicine safely. By taking your unwanted or expired medicine to one of the convenient kiosks listed below, you are protecting the environment, preventing overdoses and errors, and helping keep drugs away from kids and teens.
There are two easy and free options to safely dispose of your used motor oil and filters together.