Hazardous Materials

Identifying Hazardous Waste
Examples of household wastes are:
  • Paint
  • Paint thinner
  • Garden chemicals
  • Automotive chemicals
  • Household-cleaning chemicals
  • Hobby supplies
Disposing of Hazardous Waste
A free household hazardous-waste disposal service is available to residents of San Mateo County. For exact dates and locations of collection events or for more information, call (650) 363-4718.
Do not:
  • Pour hazardous chemicals down a storm drain
  • Throw them away
  • Flush them down the drain