Williamsburg WWTP and Sewer System - Advanced Treatment in Ohio

The Williamsburg WWTP and Sewer System is a municipal wastewater treatment facility located in Williamsburg, Clermont County, Ohio. Serving a population of approximately 2,470, the plant is part of the region's infrastructure for managing domestic wastewater. Its advanced treatment level indicates a high degree of pollutant removal, including nutrients, which is typical for plants in sensitive watersheds. With a designed capacity of 1,892.70 cubic meters per day and an average discharge volume of 984.21 cubic meters per day, the plant operates well within its capacity. As a U.S. facility, it is subject to the Clean Water Act and operates under an NPDES permit issued by the Ohio Environmental Protection Agency, which sets effluent limits to protect water quality. The plant's treated effluent is discharged into a local water body that ultimately drains into the Ohio River, a major tributary of the Mississippi River. This connection to the larger Mississippi River Basin means the plant's performance contributes to the ecological health of downstream aquatic systems, including the Gulf of Mexico.

The plant discharges into a small stream that flows into the East Fork of the Little Miami River, a tributary of the Ohio River. The Ohio River then joins the Mississippi River, which empties into the Gulf of Mexico. This watershed supports diverse aquatic life and is important for regional biodiversity. The advanced treatment helps reduce nutrient loading, which is critical for preventing eutrophication in downstream waters.