Overview
Mason WWTP and Sewer System serves 22,016 residents in Mason, Ohio, treating municipal wastewater under U.S. Clean Water Act regulations.
The Mason WWTP and Sewer System is a municipal wastewater treatment facility located in Mason, Ohio, within Warren County. Serving a population of approximately 22,016, the plant is part of the region's essential water infrastructure, handling domestic wastewater from the community. As a U.S. facility, the plant operates under the Clean Water Act, with National Pollutant Discharge Elimination System (NPDES) permits issued by the Ohio Environmental Protection Agency. The plant discharges treated effluent into local waterways that ultimately drain into the Ohio River basin. The receiving water body supports aquatic life and is part of a larger watershed that flows to the Mississippi River and the Gulf of Mexico, making proper treatment critical for downstream water quality.
Environmental context
The plant's treated effluent enters the local stream network within the Great Miami River watershed, which flows into the Ohio River. The Ohio River is a major tributary of the Mississippi River, ultimately reaching the Gulf of Mexico. This downstream chain supports diverse aquatic ecosystems and provides drinking water for millions, so effective nutrient and pollutant removal is essential to prevent eutrophication and protect biodiversity.
Frequently asked questions
The plant is located at 4166 Cincinnati Avenue in Mason, Warren County, Ohio, United States.
The plant serves approximately 22,016 residents in the city of Mason and surrounding areas.
The plant discharges treated effluent into local streams within the Great Miami River watershed, which flows into the Ohio River and eventually the Mississippi River to the Gulf of Mexico.
As a U.S. municipal wastewater plant, it operates under the Clean Water Act, requiring an NPDES permit issued by the Ohio EPA. Permits set limits on pollutants to protect receiving water quality.
For a population of this size, secondary treatment is standard under the Clean Water Act. This typically involves biological processes to reduce organic matter and suspended solids before discharge.
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