By Appointment Only, Preregistration is Required Free residential collection events are held outdoors. There are no permanent drop off locations, only these collection events. Montco residents may also attend any Household Hazardous Waste event held by Bucks, Chester, Delaware, or Philadelphia Counties. Please do not contact the host sites, as they are not affiliated with the events. In case of severe weather, call 610.278.3618, option 6 for event status.