MASON WWTP - Wastewater Treatment Plant in Mason, Michigan

MASON WWTP is a municipal wastewater treatment facility located in Mason, Michigan, serving a population of about 6,118. The plant is situated in Ingham County and is part of the region's infrastructure for managing domestic wastewater. As a facility in the United States, MASON WWTP operates under the Clean Water Act, which mandates secondary treatment for municipal plants. The National Pollutant Discharge Elimination System (NPDES) permit program regulates discharges to ensure compliance with water quality standards. Plants of this scale typically employ biological treatment followed by disinfection. The treated effluent from MASON WWTP is discharged into local waterways that drain into the Grand River watershed, ultimately reaching Lake Michigan. This connection to the Great Lakes system underscores the importance of effective treatment to protect aquatic ecosystems and downstream water quality.

MASON WWTP discharges into the Grand River watershed, which flows into Lake Michigan, part of the Great Lakes system. The receiving waters support diverse aquatic life and are used for recreation and drinking water. Protecting this watershed is critical for maintaining the ecological health of the Great Lakes, which face challenges from nutrient pollution and invasive species.