Dillonvale_Mount Pleasant WWSD WWTP and Sewers - Advanced Treatment in Dillonvale, Ohio

The Dillonvale_Mount Pleasant WWSD WWTP and Sewers is a municipal wastewater treatment facility located at 137 Dolezal Road in Dillonvale, Jefferson County, Ohio. It serves a population of approximately 2,427 residents in the Dillonvale and Mount Pleasant areas, operating as part of the regional wastewater infrastructure in eastern Ohio. The plant employs advanced treatment processes, which go beyond secondary treatment to remove additional nutrients and contaminants. With a designed capacity of 1,287.04 million gallons per year and an actual discharge volume of 670.02 million gallons per year, the facility operates well within its capacity. As a US plant, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Ohio Environmental Protection Agency, which set effluent limits to protect water quality. The treated effluent is discharged into a local receiving water body that ultimately drains into the Ohio River watershed. The Ohio River is a major tributary of the Mississippi River, supporting diverse aquatic life and providing drinking water for millions. The advanced treatment helps minimize nutrient loading and protects downstream ecosystems in the Ohio River basin.

The plant discharges into a local stream that flows into the Ohio River, a major tributary of the Mississippi River. The Ohio River watershed supports diverse aquatic species and provides habitat for migratory fish. Advanced treatment reduces nutrient pollution, helping to prevent algal blooms and maintain water quality in the downstream river system.