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Hazardous Waste

Hazardous Waste Hotline:   (707) 441-2005

Hours of Operation

Monday - Saturday 8:00 AM to 3:00 PM

(Closed from 12:00 PM to 1:00 PM)

Business by appointment only Monday - Friday


Materials That Are Not Accepted

  • Ammunition
  • Biological Waste 
  • Explosives 
  • Medical Waste 
  • Pharmaceuticals
  • Pressure Treated Wood *
  • Propane Tanks Larger than 1 Qt
  • Radioactive Waste

* Please see Solid Waste disposal


Residential & Business Collection

Residents may drop off up to 15 gallons, or 125 pounds of household hazardous waste. Liquid volume will be based on the size of the container, not the amount present in the container.

Customers are required to arrive with clean and dry hazardous waste materials that are presorted prior to arrival. Presorting of materials will assist us in the efficient placement of materials into the proper storage containers.

Customers may drop off hazardous materials Monday thru Saturday from 8 am until noon and from 1 pm until 3 pm.

If you are a business please click here for more information.


Transporting Hazardous Waste

California Health & Safety Code requires that reisdents transport no more than 15 gallons, or 125 pounds, of household hazardous waste.

Do not transport material in plastic bags or garbage cans. If a product is leaking please bag that individual product. for more info click here.

Be aware of what your transporting. Take a moment and read the labels on your waste and ensure that all warnings and cautions are adhered to

Please do not mix products. Mixing can cause dangerous and possibly violent chemical reactions. Latex paint is the exception to this rule. 

Leave materials in their original container, when possible. Only place in another container when the original container is unsafe to transport due to degradation

When you arrive please turn off and stay in your vehicle. HWMA staff will take care of everything else. If you are needed to answer questions, staff will approach you



Needles and lancets, for both humans and pets need to be disposed of properly. Please do not throw them in your trash can or recycling bin as this poses a risk. Current disposal policies require that all medical sharps must be packaged in biohazard sharps container.

California has a state-wide program that provides free sharps containers to anyone that needs them.  This is a permanent program and you can request bins whenever you need them.   The service provider for our area is called Med-Project.

HWMA can also provide you a free sharps container but please consider this as a back up.  Your best option is to use the Med-Project order form to get containers delivered to you for free.

Homemade containers will not be accepted.



Pharmaceuticals, whether prescription or over the counter will not be accepted at HWMA's facilities.

There are several convenient locations throughout the County where they can be dropped off at no charge. 

California has a state-wide program that provides free medication mail-back containers to anyone that needs them.  This program is also permanent and you can request free mail-back containers whenever you need them.