1. Home
2. States
3. Missouri
4. St. Louis County

Household hazardous waste drop-off in St. Louis County, Missouri

In St. Louis County, programs may be called HHW, household chemical waste collection — the listings below use each agency's own name.

2 listings in Florissant, St. Louis. A county site may be open only to residents of that county or of member cities.

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. Every listing links to its official source.

Listings in St. Louis County

• St. Louis Household Hazardous Waste North County Facility

  4100 Seven Hills Drive, Florissant, MO

  • Permanent drop-off
  • Paint
  • Used motor oil
  • Oil filters
  • Antifreeze
  • Household batteries
  • Car batteries
  • +6 more
  • Appointment required

  Hours: Wednesdays, 8:30 a.m.–noon and 1:00 p.m.–5:30 p.m. (arrive by 11:50 a.m. or 5:20 p.m.). Saturdays on the printed 2026 calendar, 8:00–10:00 a.m. and 10:30 a.m.–1:00 p.m. Remaining 2026 Saturdays on the locations page are November 14 and December 12.

  Source: St. Louis Household Hazardous Waste program · checked November 9, 2026

• St. Louis Household Hazardous Waste South County Facility

  291 East Hoffmeister, St. Louis, MO

  • Permanent drop-off
  • Paint
  • Used motor oil
  • Oil filters
  • Antifreeze
  • Household batteries
  • Car batteries
  • +6 more
  • Appointment required

  Hours: Thursdays and Fridays, 8:30 a.m.–noon and 1:00 p.m.–5:30 p.m. (arrive by 11:50 a.m. or 5:20 p.m.). Saturdays on the printed 2026 calendar, 8:00–10:00 a.m. and 10:30 a.m.–1:00 p.m. Remaining 2026 Saturdays on the locations page are November 21, December 5 and December 19.

  Source: St. Louis Household Hazardous Waste program · checked November 9, 2026

More household hazardous waste listings in Missouri