Household Hazardous Waste (HHW)

Residential Customers

Half Moon Bay residential customers can make an appointment at the San Mateo County HHW facility to get rid of unwanted, hazardous items in your home. Appointments are available Thursdays, Fridays, and Saturdays from 8 am - 2 pm

Can't make it to the San Mateo drop-off location? Sign up for one of the temporary HHW collection events held throughout San Mateo County (Half Moon Bay typically schedules one temporary event during the summer).

Don't know what qualifies as an HHW? Click here to find out. For more information, visit

Commercial Businesses - Very Small Quantity Generator (VSQG) Program

Some businesses that generate very little hazardous waste may be eligible to participate in San Mate County's Very Small Quantity Generator (VSQG) Program. The Program is designed to provide an inexpensive hazardous waste disposal option to businesses. Visit the VSQG website to see if you qualify.