The Chester County Solid Waste Authority (CCSWA) will be holding a Household Hazardous Waste (HHW) collection event at Owen J. Roberts Middle School on Saturday, May 20, 2017, from 9:00 am – 3:00 pm. This is a residential collection only. The maximum amount that will be accepted is 25 gallons or 220 pounds. No metal drums or Freon appliances. For a complete list of what is and is not accepted, click here.