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

The Youngstown WWTP and Sewer System is a municipal wastewater treatment facility located in Youngstown, Ohio, serving a population of around 148,000. Situated in Mahoning County, the plant is part of the region's critical water infrastructure, managing wastewater from residential, commercial, and industrial sources in the city and surrounding areas. As a large agglomeration serving over 100,000 people, the plant is subject to U. S. EPA National Pollutant Discharge Elimination System (NPDES) permitting requirements under the Clean Water Act. These regulations mandate secondary treatment as a minimum, with additional nutrient removal or disinfection as needed to protect water quality in the receiving stream. The plant discharges treated wastewater into the Mahoning River, which flows through northeastern Ohio and western Pennsylvania before joining the Beaver River, a tributary of the Ohio River. The Ohio River ultimately drains into the Mississippi River and the Gulf of Mexico. The Mahoning River watershed supports diverse aquatic life and is an important regional water resource.

The Youngstown WWTP discharges into the Mahoning River, which flows through Ohio and Pennsylvania to the Beaver River, then the Ohio River, and eventually the Mississippi River and Gulf of Mexico. The Mahoning River watershed supports diverse fish and macroinvertebrate communities, and the plant's discharge must meet water quality standards to protect downstream aquatic habitats and recreational uses.