Hazardous Waste Disposal

Safely dispose of unused or expired medications.

• Location: Sonoma Police Station, 175 First St. West
• Drop Box Hours: Monday through Friday, 9:00 AM – 5:00 PM
• No appointment necessary

Central Disposal Site – Petaluma

• Address: 500 Mecham Road, Building 5, Petaluma
• Open: Thursday, Friday, Saturday from 7:30 AM – 2:30 PM
• Phone: (707) 795-2025

Directions from Sonoma:

• Take Hwy 101 to the Cotati off-ramp
• Take Hwy 116 west toward Sebastopol
• Left on Stony Point South
• Right on Mecham Road – site is on the right

Transport Guidelines:

• Maximum of 15 gallons of liquids (no more than 5 gallons per container) or 125 pounds of solids
• Do not mix chemicals
• Use sealed containers, packed to prevent spills
• Sharps must be in sealed, labeled sharps containers

Not Accepted:

• Electronics, explosives, ammunition, radioactive materials, biological waste (except syringes), controlled substances

Weekly events throughout Sonoma County – by appointment only

• Appointment required
• Bring valid ID to verify residency
• Tuesdays, 4:00 PM – 8:00 PM
• Locations disclosed upon confirmation

To schedule an appointment:

• Call: (707) 795-2025 Option 3 or Toll-Free (877) 747-1870
• Email: [email protected]
• Online: Schedule Appointment

Provide your name, phone number, preferred time, and date when booking. Appointments must be made at least 24 hours in advance. Limit 80 appointments per event.

For direct assistance: Call (707) 364-6927

HHW Collection Event

• Date: September 2, 2025
• Time: 4:00 PM – 8:00 PM
• Location: Provided after appointment confirmation

Schedule now:
Click here to make an appointment