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On the Watertown Seal is a picture of an English Colonist and an Indian exchanging, as peace tokens,  bread for fish.  Captain Roger Clap landed at Nantasket Point in 1630 and rode up Charles River to Gerry's Landing with the first party of Watertown Colonists.
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Emergency Alert - Inactive
October and November 2016 Household Hazardous Waste (HHW) Collections
Please click here for October and November 2016 Household Hazardous Waste Collection Event Schedule and list of acceptable materials.

Pre-registration is NOT required and the event is free of charge to Watertown residents.  However, when you attend any one of the MHHP Collection Events you must have an ID or utility bill displaying your Watertown address.

Remaining HHW Collection Events and Locations:

The HHW Collection Events operate from 9:00 AM - 2:00 PM and is open:    

  • Date: Saturday, October 15, 2016
  • Location:  Household Hazardous Waste Collection Facility, 60 Hartwell Avenue, Lexington, MA


  • Date:  Saturday, November 12, 2016
  • Change of Location:  *** Lexington Department of Public Works, 201 Bedford Street, Lexington, MA ***


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.

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.
  • Other options are available for businesses, contact Seth Dawber from Clean Harbors at (781) 380-7121.

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
  • CRT's, CPU's, 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)    
  • PCB's
  • Radioactive materials
  • Syringes, hypodermic needles, lancets
  • Smoke detectors
  • Tires

The HHW Collection staff reserve the right to refuse unidentified materials or 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.