The National Pollution Discharge Elimination System has set a limit on BOD (Biochemical Oxygen Demand) and the level of suspended solids that may be discharged into the nation’s lakes and streams. The state of Ohio issues a NPDES Permit, which specifies BOD and suspended solid discharge limits for municipal wastewater treatment facilities. The Water Pollution Control Center’s BOD  is 15 milligrams per liter (mg/l) and its suspended solid permit limit is 20.0 parts per million (ppm). Avon Lake’s average annual discharges in 2003 were 5.9 mg/l and 10.6 ppm, well below the specified amounts.

The mission of the WPCC is to ensure that the plant’s discharge will meet or exceed federal and state guidelines for protecting Lake Erie, our receiving waters. The conversion to UV disinfection and substantial reduction of suspended solids in our wastewater treatment process is supportive of the movement to protect the lake’s ecosystem and preserve its plant and animal life – good news for the area’s environmentalists and sportsmen!

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