Environmental Services

Household Hazardous Waste Roundups
Residents are encouraged to bring unwanted Household Hazardous Waste and Electronic Waste (HHW/E-Waste) items to the County mobile collection events for safe and proper disposal free of charge. View FREE HHW/E-Waste events near you.


Things You CAN Bring

  • Motor oil, antifreeze, paint, paint thinner
  • Turpentine, cleaners with acids or lye
  • Pesticides and herbicides
  • Household and car batteries
  • Old computers and television sets
  • Sharps or used needles
  • Expired pharmaceuticals and mercury thermometers

Things You CANNOT Bring

  • Explosives, ammunition or radioactive materials
  • Waste from businesses will not be accepted
  • Trash or old tires
  • White goods such as washers, stoves, refrigerators or air conditioners

How to Prepare

  • In general, there is a limit of 15 gallons or 125 lbs. per vehicle.
  • Bring items in a sturdy box, preferably in their original labeled containers.
  • Be prepared to leave your containers.
  • Do not mix products together.
Workshops and Events
Smart Gardening Workshops
Attend a FREE Smart Gardening Workshop and learn more about backyard composting, worm composting, grass recycling, water-wise gardening, and fire-wise gardening! Workshops are about 1.5 hours long and are offered in two (2) levels:

  1. Beginning
  2. Advanced
Contact LA County for Compost bins that can be purchased at the subsidized prices of $40 each for a backyard compost bin and $65 each for a worm compost bin (this price includes 1/2 lb. of worms). Please follow the link below to the LA County website for further details.
View workshop schedule: dpw.lacounty.gov/epd/sg/wk_scheds.cfm

SCAQMD (South Coast Air Quality Management District)  is the air pollution control agency for all of Orange County and the urban portions of Los Angeles, Riverside and San Bernardino counties, among the smoggiest regions of the U.S. South Coast AQMD, is committed to protecting the health of residents while remaining sensitive to businesses. For more information click on the South Coast AQMD link below to visit the City of San Dimas South Coast AQMD webpage. South Coast AQMD information.