Household Hazardous Waste

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TO_HHW_Entrance_(May_2014) SMALL-editUnLoading Area SMALL

The City of Thousand Oaks operates a permanent, state-of-the-art Household Hazardous Waste (HHW) Facility, open to residents of Thousand Oaks & unincorporated Ventura County (e.g. Lake Sherwood, Santa Rosa Valley, El Rio, Saticoy, Piru). If you live outside of our service area, click here for links to the HHW programs of nearby cities.

Leftover household products that contain corrosive, toxic, ignitable, or reactive ingredients are considered to be “Household Hazardous Materials” or “HHW.” Products such as cleaners, oils, batteries, fluorescent lights and pesticides require special care when you dispose of them. For information about non-hazardous waste, visit our Trash, Recycling, and Organics home page

Schedule a HHW Drop-off Appointment

Facility Information

Appointments are required in order to drop off household hazardous waste at the facility. Find out how the program works below.

Location: 2010 Conejo Center Drive, Newbury Park, CA 91320

Hours of operation: Fridays & Saturdays 9:00AM to 1:00PM (see closure dates below)

2023 Holiday Closure Dates:

  • Martin Luther King Weekend: Jan 12-13, 2024
  • President's Day Weekend: February 16-17, 2024
  • Memorial Day Weekend: May 24-25, 2024
  • Independence Day Weekend: July 5-6, 2024
  • Labor Day Weekend: August 30-31, 2024
  • Veterans Day Weekend: November 8-9, 2024
  • Thanksgiving Weekend: November 29-30, 2024
  • Christmas Weekend: December 20-21, 2024
  • New Year's Weekend: December 27-28, 2024

How The Program Works:

Review the list of accepted materials to see if your items qualify as hazardous waste and are eligible for drop-off.

Appointments are required for HHW drop-offs

Click here to schedule an appointment online or contact our partners at Clean Harbors Environmental Services at (800) 356-8570 to make, change, or cancel an appointment Mon-Fri 8AM - 5PM. Their staff members are knowledgeable and may answer any questions you may have about program operations, materials accepted, proper packaging and transport, and more.

Online registration closes at 5 PM the day prior to the disposal date. Appointment times are limited and available on a first-come, first-served basis.

The HHW Facility will not cancel events in the event of rain or inclement weather.

For any additional questions about the HHW Program or an upcoming drop-off appointment contact a Clean Harbors staff member (800-356-8570 or

On the day of your appointment:

  • Ensure you bring a valid photo ID, utility bill, or other means of identification to verify residency (you must live in Thousand Oaks or unincorporated Ventura County)
  • Properly package and carefully transport your hazardous waste to the collection site
  • Arrive promptly at your scheduled time
  • When you arrive at the HHW Facility, follow the signs and painted arrows to circle around the rear of the facility in a u-shaped direction
  • Come to a stop just before the unloading area to check in with the greeter who will check your identification
  • Pull forward when signaled by facility staff who will instruct you on where to stop your vehicle in the unloading area. You will be instructed to turn off your vehicle and are required to REMAIN IN YOUR VEHICLE at all times. No smoking is allowed on the premises for safety purposes.
  • A Clean Harbors Environmental Services technician will unload the hazardous materials from your vehicle and send you on your way!

Please note: all containers brought to the facility will not be returned (except for used oil collection containers). Read here for more information prior to your visit.

Household Hazardous Waste Material Guidelines

Materials accepted at the Household Hazardous Waste Facility during regular operating hours:

In the house

  • Aerosol sprays
  • Batteries
  • Fire extinguishers
  • Fluorescent light bulbs and tubes
  • Holiday light strands
  • Liquid cleaners
  • Medical needles (sharps)
  • Mercury-containing items
  • Nail polish and remover
  • Oven cleaners
  • Polishes
  • Used Frying Oil
  • Electronics

In the workshop

  • Glues and adhesives
  • Paint (all kinds)
  • Paint thinners
  • Photo chemicals
  • Solvents
  • Wood preservatives and finishes

In the garage

  • Antifreeze
  • Auto batteries
  • Brake fluid
  • Engine cleaners
  • Gasoline
  • Oil and oil filters
  • Waxes and polishes
  • Road and Marine Flares

In the yard

  • Fertilizers
  • Fungicides
  • Pesticides
  • Rodenticides
  • Pool chemicals
  • Propane cylinders
  • Weed killers

*State law restricts the transportation of HHW to no more than 15 gallons or 125 pounds per vehicle.

Unaccepted Materials:

  • Biological waste
  • Commercial waste (click here for more information about managing commercial hazardous waste)
  • Radioactive materials
  • Medications - click here for free mail-back services
  • Controlled substances
  • Explosives/ammunition
  • Tires
  • Appliances (includes anything with freon)
  • Media (CDs, DVDs, floppy disks, VHS and audio cassette tapes) - click here to recycle them

Material Reuse Program

The Material Reuse Program operates alongside the City's weekly Household Hazardous Waste collection and is located at the HHW Facility. Appointments are not needed to shop at the City's Material Reuse Store.

    Household Hazardous Waste Home Collection Program HHW home collection 1

    Schedule a free collection of household hazardous materials right from your doorstep.  Call (805) 852-5264 to  schedule a pick-up and instructions will be sent to you. Click HERE for more information. 

    Schedule a HHW Home Collection


    Battery Recycling

    City Hall green battery  bin low res

    Household batteries of all sizes (AAA, AA, C, D, button cell, 9 Volt, etc.), both rechargeable and single use are considered hazardous waste when discarded. All household batteries may be recycled at the City's HHW Facility or at the drop-off locations below. Please note: automotive and industrial batteries are not accepted at these drop locations. Automotive and industrial batteries may be recycled at the HHW Facility.

    Warning: Lithium button batteries are very dangerous to children and pets. Improper handling or storage may result in death or injury.

    Batteries are also fire hazards. Click here [PDF] to read about 9 Volt battery safety.

    Disposal tips for the community battery disposal bins: no plastic bags; deposit used alkaline and rechargeable household batteries only; tape battery contacts; no automotive or motorcycle batteries.




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    Fluorescent Light Disposal and Broken Bulb Handling

    You may bring any size or type of fluorescent and LED bulbs to the City's Hazardous Waste Facility.

    Broken fluorescent bulbs require immediate attention to minimize exposure to mercury vapor contained in the glass tubing. If a fluorescent bulb breaks in your home, view the EPA's guidelines on how to respond properly.

    Additional Resources

    Household hazardous waste collection in neighboring cities: