Household Hazardous Waste




Improper and illegal disposal can contaminate our drinking water, impede waste water treatment plants, pollute local waterways and endanger workers. It can also lead to penalties and fines.



The Household Hazardous Waste Collection Facility is for safe and legal disposal of unusable hazardous products. Please remember to pack products carefully so they won’t mix or spill and transport them in the trunk if possible.


The facility accepts all types of hazardous waste except:  Radioactives • Explosives • Ammunition.  Smoke detectors may contain trace amounts of radioactive material and are not accepted at this facility – please return them to the manufacturer for proper disposal.

For highway safety, there is a limit of 15 gallons or 125 pounds of household hazardous waste per trip.

:  No appointment required; no fee.
Businesses:  Appointment only; fee for service.

The HHW facility is located at 889-A Devlin Road, off Hwy 29 in south Napa – click here for a map and directions.
Open every Fri & Sat:  9am-4pm

Reduce waste – free stuff is available at the HHW facility’s Reuse Locker!

For more information call:  1-800-984-9661 or 707-259-8608



Polishes & cleaners
Oven cleaners
Drain openers
Lighter fluids
Unwanted medications (no Controlled Substances – contact your pharmacist if you are unsure if your medication is a Controlled Substance)
Fluorescent bulbs/tubes
Rechargeable or alkaline batteries
Mercury containing items (thermometers, thermostats, etc.)


Pool chemicals

Latex & oil-based paints
Paint thinner & strippers
Wood preservatives
Grease & rust solvents
Wood & metal cleaners
Glues & cements
Photo chemicals
Transmission fluids
Gasoline & fuel additives
Carburetor cleaners
Used oil & oil filters
Did you know that throwing out a mercury thermostat could cost you $70,000? Instead, bring in your mercury thermostat to the HHW facility…and you can even get a $5 rebate! You’ll get rewarded for doing the right thing, avoid the $70,000 penalty, and protect the environment by recycling mercury. Click here to see if you’re eligible for the $5 rebate.

Could your unused products be used by someone else? Don’t let it sit on your shelf!  At the Hazardous Waste Collection Facility they’ll decide if your product can go to the “Reuse Locker” where someone else can use it up instead of wasting it.


Businesses that generates less than 220 pounds or 27 gallons of hazardous waste per month can dispose of their waste at the Hazardous Waste Facility.  Appointments are required and there is a fee for this service.  For appointments and information:  1-800-984-9661.  Protect your business and employees by disposing of unwanted, unused, and out-of-date hazardous wastes properly.

Businesses that generate hazardous waste are required to obtain a Hazardous Waste Generator Permit.  Call Napa County Environmental Management at 253-4471 or visit the Napa County website for information.


Can the product be used by someone else?If you have an unwanted product that someone else could use – don’t let it sit on the shelf! Bring it to the Hazardous Waste Collection Facility where they will determine if it can be put in the Reuse Locker.
Unwanted household hazardous waste is very expensive for the County to dispose. A better option for both your budget and the environment is to prevent the “waste” from the start.
1) Buy the right product for the job. There is no magic bullet! What do you want the product to do?
2) Buy the least toxic alternative. Many manufacturers are responding to consumer demands for alternatives.
3) Buy only the amount you need or can use up. Will you be able to use up the “jumbo” or “bargain” size product before it expires?
4) Store the product properly so it doesn’t become unusable. Keep in a covered, dry, safe place.

Our Water, Our World
is a program that provides information about less-toxic alternatives to managing home and garden pests.  Choose less toxic products for your home and garden…Look for the “Our Water, Our World” symbol before you buy.  Participating Napa County stores include:

  • Central Valley Builders Supply
  • Van Winden Garden Center
  • Zeller’s Ace Hardware

St. Helena:

  • Central Valley Builders Supply
  • Whiting Nursery


  • Silverado Ace

American Canyon:

  • Mid City Nursery


In each store look for:

  • User-friendly fact sheets on common pests & less toxic ways to control them including product recommendations
  • Tags on store shelves to help you find the less-toxic products recommended

Visit online: offers information about pesticide use and the impact of pesticides on the environment.  Use the “Ask the Expert” feature on the website and have your question answered by staff at the Bio-Integral Resource Center in Berkeley.


To learn more, visit these sites for in-depth discussion on the benefits of reducing our use of toxics, examples of product substitutes, and fact sheets for specific problems.