The City of Longmont encourages citizens to dispose of Household Hazardous Waste (HHW) in an environmentally-responsible manner, and supports this goal through year-round and special event waste disposal programs.
Not sure whether your item qualifies? Ask our Waste Wizard for the answer.
Year-Round Disposal Programs
Boulder County Hazardous Materials Management Facility (HMMF) will be closed until further notice, due to the current COVID-19 health situation. Please do not drop-off outisde of the HMMF building. Please safely store your HHW at home until the facility resumes normal operations.
The City of Longmont partners with Boulder County to operate a hazardous waste disposal center, known as the Hazardous Materials Management Facility.
- Open 4 days per week, year-round, Wednesday - Saturday 8:30 am - 4:00 pm
- Located at 1901 63rd Street in Boulder (enter at Boulder County Recycling Center - follow signs to HMM facility).
- Longmont residents may take household chemicals for appropriate disposal AT NO CHARGE.
- Note: Proof of Boulder County residency (for example, your driver's license, vehicle registration, voter identification, tax certificate, lease agreement or utility bill) is required when you drop off your wastes.
- Contact the Hazardous Materials Management Facility for more information.
The City of Longmont’s Waste Diversion Center accepts used automotive and cooking oil, and automotive batteries year-round.
Household Hazardous Chemical Drop-Off Day
The City of Longmont hosts a Household Hazardous Chemical Drop-Off Day once a year.
2020: Saturday, September 12, 9 am - 1 pm
The City of Longmont’s Waste Services Center located at 110 South Martin Street.
Longmont residents can bring hazardous household chemicals for disposal AT NO CHARGE.
- Note: Please be sure to bring a current City of Longmont Utility Bill and identification to show that you are a City resident paying for trash/recycling services.
- This event is for Longmont residents only; Sorry, no commercial or business waste accepted.
Chemists will be on-site to identify and properly dispose of many types of household hazardous chemicals.
- Residents may bring:
- Aerosol cans;
- Paints; and
- Other household chemical wastes.
- Residents may not bring:
- Commercial-generated wastes of any kind such as biological and/or medical wastes;
- Expired medicines;
- Radioactive materials;
- Compressed gas cylinders (such as those for propane and butane);
- Explosives or ammunitions; or
- Fire extinguishers.