Household hazardous waste drop-off in Howard County, Maryland
Household hazardous waste programs that list Howard County, from county and Baltimore City pages and flyers, and the Maryland Department of the Environment list. Most programs serve only their own residents, so check “who can use it” on each listing.
Part of the Baltimore-Columbia-Towson metro.
Drop-off site
- County contact
- 410-313-6444
- Program
- Household hazardous waste drop-off on Saturdays, April through November, at Alpha Ridge Landfill
Permanent drop-off sites
- Permanent drop-off · 2350 Marriottsville Road, Marriottsville, MD 21104Who can use it: Howard County residents; driver's license required as proof of residency
Call ahead. Hours, limits and accepted items change. Confirm with the program before you go.
Last checked Mon, Oct 26, 2026. Each listing links to its own page with the official sources and the date we checked it. How we check · Report a correction.