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City of Longmont Household Hazardous Chemical Drop-Off Day

110 South Martin Street, Longmont, CO

Call ahead. Hours, fees, residency rules, appointments and accepted materials change. Check the official page or call before you go. Never mix chemicals, and keep products in their original containers. Open the official source page.

Type
Collection event
Address
110 South Martin Street, Longmont, CO (map pin at street level)
County
Boulder County
Dates
August 21, 2027
Hours
Saturday, August 21, 2027, 8 a.m.–noon at the Waste Services Center.
Accepted
Other household hazardous waste
Not accepted
Not listed in our source — check the official page before you go.
Appointment
Not stated in our source.
Who can use it
City of Longmont residents only. Bring a current City of Longmont utility bill and identification. No commercial or business waste.
Fees
No charge.
Phone
303-776-6050
Notes
The city also partners with Boulder County’s Hazardous Materials Management Facility at 1901 63rd Street, which is listed separately. The city’s Recycling Center accepts used automotive and cooking oil and automotive batteries year-round; that limited program was not added as a separate household hazardous waste listing.

Source: City of Longmont

Last checked: — Read directly from the official source page on 2026-11-09: confirmed the household hazardous waste service, address, hours, event dates, residency/ID rules, fees, phone; other fields not re-checked.

Source and reuse terms: Public government information (facts); linked to the official source page

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