First Saturdays of the month (except holidays and holiday weekends)
To participate, you must schedule an appointment at San Mateo County’s HHW Program: www.smchealth.org/hhw or by calling (650) 363-4718, select option 3. The event location will be disclosed once your appointment has been confirmed. Limit 10 gallons.
Residents can also dispose of HHW for free at San Mateo County’s permanent HHW facility Thursdays-Saturdays (except holidays).
You must make an appointment at www.smchealth.org/hhw or call (650) 363-4718, select option 3.