2021 Household Hazardous Waste (HHW) Collection

Household Hazardous Waste 

The next Household Hazardous Waste Collection will be on September 19, 2021 from 9:00 am - 2:00 pm at the Minuteman Household Hazardous Product Collection Facility at the Lexington Compost Facility at 60 Hartwell Avenue, Lexington, MA 02421 please complete the REQUIRED Pre-Registration Form at least 48 hours in advance. 

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Minuteman Household Hazardous Waste Instructions

Important Guidelines Include:

  • Hazardous materials will ONLY be accepted from trunks, the backs of SUVs and backs of pick up trucks
  • DO NOT exit your vehicle
  • Face coverings are MANDATORY
  • Do NOT roll down vehicle windows
  • License MUST be available and held up to window
  • NO containers will be returned

The Town of Watertown is a member of the Minuteman Regional Household Hazardous Products (MHHP) Facility. The MHHP Facility is located in Lexington. The MHHP Facility is open one weekend day from April through November each year, and accepts a wide variety of household hazardous waste. Watertown residents may help protect the environment by taking common household hazardous waste products to the MHHP Facility for disposal. 

When you attend any one of the MHHP Collection Events you must have an ID or utility bill displaying your Watertown address.

Minuteman Household Hazardous Products Facility:

Location: 60 Hartwell Avenue, Lexington, MA 02421

 HHW Collection Event Schedule (9am-2pm):

  • April 24, 2021
  • May 15, 2021
  • June 19, 2021 
  • July 17, 2021 
  • August 21, 2021 
  • *Sunday September 19, 2021 
  • October 16, 2021 
  • November 6, 2021 

Collect Household Hazardous Waste:

  • Be efficient. Consolidate and combine household hazardous waste with your neighbors to keep costs down and this program in place for future years.
  • Please bring at least 10 gallons or 10 pounds of household hazardous waste.
  • The cost to the Town is over $50 per participant whether you have 1 gallon or 10 gallons.
  • Only household quantities will be accepted under the household hazardous waste collection program.
  • Latex paint is not accepted. See instructions below for latex paint disposal.

Transportation Tips:

  • Never mix chemicals, store different items in different boxes.
  • Tighten caps and lids.
  • Leave materials in original containers.
  • Pad boxes with newspapers to minimize spills.
  • Pack your vehicle and drive directly to the site.
  • Do not take a bicycle to the facility for the transport of your household hazardous waste, use your vehicle for the transport.
  • Never smoke while handling hazardous material.

Directions to the MHHP Facility located at 60 Hartwell Avenue, Lexington, MA 02421

  1. From Route 128 take Exit 31B (MA-225 W/ MA-4 N/ Bedford St toward Bedford).
  2. At the end of the exit ramp, stay in the right lane.
  3. Bear right and enter the jug-handle before the first set of lights.
  4. At the end of the jug-handle, continue straight through the traffic light onto Hartwell Avenue.
  5. Travel 0.5 miles and the MHHP Facility will be on your left after the bike path.

Important Information:

  • If you need further information about the MHHP Collection Events, please contact the Watertown Health Department at (617) 972-6446.
  • If you are unable to attend one of the above events, you may attend pay-as-you-go events held at the Clean Harbors Facility in Braintree. Contact them directly at (781) 380-7177 for available dates and times.

What Household Hazardous Products Can I Bring for Disposal?

General Household

  • Acids (corrosives)
  • Aerosol cans (excluding empty cans)
  • Art supplies
  • Batteries - pre-1994 alkaline, and all NiCad, button, zinc and lithium
  • Chemistry set chemicals
  • Fiberglass resins
  • Hobby supplies (rubber cement, airplane glue, etc.)
  • Mercury
  • Mercury containing devices (switches, thermostats, fluorescent lamps, compact fluorescent bulbs, thermometers, blood pressure equipment)
  • Moth balls/crystals
  • Oil paint, paint thinners, varnish, stain, and shellac (NO LATEX PAINT is allowed).
  • Paint strippers, turpentine, and other paint solvents.
  • Polish and strippers - furniture, floor, metal
  • Photography chemicals
  • Rug and upholstery cleaners
  • Solvents and adhesives
  • Unlabeled and unknown chemicals

Kitchen Materials

  • Ammonia - in large quantities
  • Drain cleaners
  • Lighter fluids
  • Oven cleaners

Laundry Materials

  • Chlorine bleach - in large quantities
  • Spot removers

Bathroom Products

  • Hair dye
  • Nail polish remover
  • Toilet cleaners

Lawn and Garden Materials

  • Anything labeled "Combustible"
  • Cesspool cleaners (corrosives)
  • Flammable liquids / gasoline
  • Flea and tick powders
  • Fire starters
  • Fungicides
  • Herbicides
  • Insecticides
  • Pesticides
  • Poisons
  • Pool chemicals


  • Anti freeze
  • Batteries - auto and motorcycle size
  • Brake fluid
  • Carburetor cleaners
  • Contaminated motor oil
  • Radiator flush
  • Solvents and degreasers
  • Tire cleaners
  • Transmission fluid
  • Waste fuels (gasoline, kerosene, etc.)

Propane Tanks

  • Propane tanks up to 20 pound size (the standard barbeque grill size)

Additional materials not included in this list may be accepted at the vendor's discretion.

Unacceptable Materials / Do Not Bring the Following:

  • Air conditioner and kitchen appliances - contact DPW at (617) 972-6420 to purchase a $20 sticker for disposal
  • Ammunition, Fireworks, Explosives, Gunpowder, Unknown Cylinders, etc.
  • Asbestos - contact a licensed disposal contractor
  • Commercial hazardous waste
  • Construction waste - contact a licensed disposal contractor
  • CRTs, CPUs, computer monitors, television sets, etc. - contact DPW at (617) 972-6420
  • Fire extinguishers - contact Keene Fire at (781) 899-6565 to dispose of for a fee
  • Gas cylinders (other than propane)
  • Hypodermic needles and medical sharps - contact Health Department at (617) 972-6446 for collection information.
  • Latex paint (see below)
  • Prescription Medications - kiosk located at Watertown Police Station, 552 Main Street
  • Metal tanks, other than propane (e.g. Freon, Helium, Acetylene)
  • PCBs
  • Radioactive materials
  • Syringes, hypodermic needles, lancets
  • Smoke detectors
  • Tires

The HHW Collection staff reserve the right to refuse unidentified materials or an unacceptable amount of hazardous waste.

Latex Paint Disposal

Latex paint is not considered a hazardous product and is not accepted at the collection event. In Watertown fully solidified latex paint may be put in the regular trash toter for curbside collection, liquid form or semi-liquid paint is not accepted. The following disposal options can be used for latex paint:

  1. If there is a small amount, open the can and let it dry out. The can of solidified paint may be placed in the regular trash toter for curbside collection.
  2. Place kitty litter or purchase "waste latex paint hardener" Product (available at paint and hardware stores) in the can and then let the paint dry out to a solid form. The can of solidified paint may be placed in the regular trash toter for curbside collection.
  3. Line a box with newspaper and pour small amounts of paint into the box; let each layer dry before adding another layer. The "painted" box can be put in your regular trash toter for curbside collection.