Home Missouri St. Charles, MO City of Saint Charles Household Hazardous Waste Program City of Saint Charles Household Hazardous Waste Program Contact Information St. Charles, MO, Missouri 63303 (636) 255-6142 https://www.stcharlescitymo.gov Hours Please call for the current collection schedule. Garden / Yard Waste Branches Brush Grass Clippings Leaves Weeds Yard Waste 1 2 3 4 50.000