Household Hazardous Waste (HHW) Collection Events

Every week there is an HHW Collection Event somewhere in Sonoma County.

The complete list of locations is available on our calendar. Bring your ID to prove residency.

Appointment: By appointment only: **NEW** Online appointment system is now available! Simply find the event table below, click on the event that you'd like to attend, and follow the prompt! (Links will be provided 2 months in advance.)

Please make an appointment at least 24 hours prior to the collection event. Once the appointment request is confirmed, you will receive a confirmation with the address of the collection event. Events have a limit of 80 appointments.
Contact:Office: (707) 795-2025
Toll-free: (877) 747-1870 option 3
Text: (707) 364-6927
Email toxicsdisposal@cleanharbors.com.
Phone line staffed M-F from 8am to 2:30pm or leave a message with your name and phone number.
Event hours: Tuesdays 4P-8P
Location: Visit our calendar for a full schedule of HHW Collection Events. The locations for the events vary and the specific site and address will be announced after you make your appointment.
Fees: No fees for Sonoma County residents.
Transportation & packing:
  • State transportation laws limit each vehicle to a maximum of 15 gallons of liquid (with a maximum of 5 gallons per container) or 125 pounds of solid material
  • Never mix chemicals
  • Place in sealed containers in the trunk, packed to prevent spills
  • Sharps/needles must be in a sealed and labeled approved container.
  • While visiting the HHW facility, remain in your vehicle at all times.
Not accepted:
  • Explosives or ammunition
  • Radioactive materials
  • Biological wastes (except syringes)
  • Electronics
  • Controlled substances

HHW Collection Events At A Glance

Click on an event below to schedule an online appointment

July 2022

05 - Petaluma
12 - Larkfield
19 - Cloverdale
26 - Sebastopol

August 2022

02 - Santa Rosa, E
09 - Sonoma *FULL*
16 - Healdsburg *FULL*
23 - Oakmont *FULL*
30 - Cotati

September 2022

06 - Santa Rosa, W

13 - Windsor

20 - Forestville

27 - Rincon Valley

October 2022

04 - Kenwood

11 - Cloverdale

18 - Larkfield

25 - Rohnert Park

November 2022

01 - Guerneville

08 - Santa Rosa, E

15 - Sonoma

29 - Windsor

December 2022

06 - Oakmont
13 - Petaluma



January 2023

03 - Sebastopol
10 - Santa Rosa, W
17 - Cloverdale
24 - Sonoma

31 - Santa Rosa, E

February 2023

07 - Healdsburg
14 - Cotati
21 - Larkfield
28 - Kenwood

March 2023

07 - Monte Rio
14 - Oakmont
21 - Windsor
28 - Petaluma

Events are subject to change due to COVID-19 or natural disasters.

HazMobile Events in Sea Ranch

MendoRecycle provides HHW collection events for Sonoma County residents in the Sea Ranch area. HazMobile events are free to households while small, qualifying businesses are required to pay a fee per gallon based on the types of hazardous waste. Appointments are now required for both residents and businesses. For more information or to schedule an appointment, call 707-468-9710.

Location: Sea Ranch N. Fire Station at 39225 Highway 1

Time: 9 AM- 1 PM

2022 Dates: February 18-19; May 20-21; November 18-19. August 19-20 may be cancelled, call for updates.