Crestline WWTP and Sewer System - Crestline, Ohio Wastewater Treatment

Crestline WWTP and Sewer System is a municipal wastewater treatment facility located in Crestline, Ohio, serving a population of about 4,630. The plant is situated in Crawford County, within the Great Lakes Basin, and plays a key role in managing local wastewater for this small community. Under the U.S. Clean Water Act, wastewater treatment plants serving populations of this size are typically required to provide secondary treatment, as defined by the EPA's National Pollutant Discharge Elimination System (NPDES) permit program. The Ohio EPA issues permits that set effluent limits to protect water quality, ensuring that treated wastewater meets federal and state standards before discharge. The plant's treated effluent ultimately flows into the Sandusky River watershed, which drains into Lake Erie, part of the Great Lakes system. This region supports diverse aquatic life and is important for recreational activities and drinking water supplies. Proper treatment helps reduce nutrient loading and protects the ecological health of Lake Erie.

The plant discharges into the Sandusky River basin, which flows north into Lake Erie, a vital freshwater resource in the Great Lakes system. Lake Erie supports a diverse ecosystem, including fish species such as walleye and perch, and is a key source of drinking water for millions. Nutrient management is critical in this watershed to prevent harmful algal blooms that can impact water quality and aquatic life.