Hazardous Materials

Service Temporarily Suspended         

Until further notice, the city cannot accept special collections of household hazardous waste, due to the temporary closure of the county's household hazardous waste drop-off.

Alternatively, residents can take hazardous items to the Montgomery County Transfer Station located at 16101 Frederick Road, Derwood MD 20855.

Rockville provides unlimited hazardous waste collection by appointment only. Alternatively, you can drop off household hazardous waste at the Montgomery County Transfer Station.

Household products, such as oil-based paints, cleaners, oils, batteries and pesticides, contain corrosive, toxic, ignitable or reactive ingredients that are considered household hazardous waste. Rockville offers a convenient and safe collection service to help you safely dispose of these products.

Tips for Collection:

  • Place liquids and chemicals in original containers or in clearly marked containers. All containers should be in a box labeled "HAZMAT".
  • Place materials in a secure area, such as the top of your driveway, to prevent spills.
  • No gasoline, gas-oil mixes, flammable liquids, unwanted fuels (these items should be taken directly to the Montgomery County Transfer Station) 
 Still have questions? Contact: 

Recycling and Refuse

TDD: 240-314-8137
Monday - Thursday
7 a.m. - 5:00 p.m.
  1. Accepted Hazardous Waste
  2. Not Accepted

Liquids and Chemicals

  • Acids/caustics (cleaning and pool chemicals)
  • Aerosol cans with fluid 
  • Motor oil, antifreeze, brake fluid (limited to 4 jugs)
  • Pesticides, poisons, insecticides
  • Oil-based paint
  • Used cooking and vegetable oil (limited to 5 gallons. To allow oil to be recycled, please do not mix with any other fluids and place in a container with a tight-fitting lid; metal or plastic containers preferred)


  • Car batteries (limited to 4 per collection)
  • Rechargeable batteries Includes lithium, lithium-ion, nickel-cadmium, nickel metal hydride, small sealed lead acid, mercuric oxide, silver oxide and tool batteries (Place each battery individually in plastic bag or tape ends with masking tape or non-metallic tape)
  • Compact fluorescent bulbs