Grafton WWTP and Sewer System - Municipal Wastewater Treatment in Grafton, Ohio

Grafton WWTP and Sewer System is a municipal wastewater treatment facility located in Grafton, Lorain County, Ohio. Serving a population of about 10,343, the plant is part of the region's infrastructure for managing domestic wastewater. The facility is situated inland, more than 50 kilometers from the Lake Erie coast. Under the U.S. Clean Water Act, wastewater treatment plants of this scale are typically required to meet secondary treatment standards through the National Pollutant Discharge Elimination System (NPDES) permitting program. The plant has a designed capacity of 1.00 million gallons per day, which aligns with the needs of a small to medium-sized community. Treatment processes and operational status are consistent with standard municipal practices. The plant's treated effluent is discharged into local waterways that ultimately drain into Lake Erie, part of the Great Lakes Basin. This watershed supports diverse aquatic life and provides drinking water for millions. The plant's performance is critical to protecting downstream water quality and the ecological health of the Lake Erie ecosystem.

The plant discharges into tributaries of the Black River, which flows north into Lake Erie. Lake Erie is the shallowest of the Great Lakes and supports a productive fishery, but it is also vulnerable to nutrient pollution and algal blooms. The plant's operations help control nutrient loads and protect the lake's ecological balance.