Millersburg WWTP - Secondary Treatment Plant in Elkhart County, Indiana

Millersburg WWTP is a municipal wastewater treatment plant located in Elkhart County, Indiana, United States. The facility serves a small community of approximately 980 residents, reflecting its role in managing local domestic wastewater. As a secondary treatment plant, it provides biological treatment to reduce organic pollutants and suspended solids before discharge. The plant operates under the regulatory framework of the US Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all point source discharges. For small communities like Millersburg, secondary treatment is the standard requirement, ensuring compliance with federal effluent guidelines. The plant's designed capacity is 454.25 volume units, matching its current discharge volume, indicating stable operation. The treated effluent from Millersburg WWTP is discharged into nearby streams that ultimately drain into the St. Joseph River watershed, part of the larger Lake Michigan basin. This water body supports diverse aquatic life and is important for regional water quality. The plant's location inland, away from the Great Lakes coast, reduces direct marine impact but still requires careful management to protect local ecosystems.

Millersburg WWTP discharges into tributaries of the St. Joseph River, which flows into Lake Michigan. The St. Joseph River watershed supports diverse aquatic species and provides habitat for fish and wildlife. The plant's inland location means its effluent contributes to freshwater ecosystems rather than coastal marine environments, but nutrient and pollutant loads must be managed to prevent eutrophication and maintain water quality in the Great Lakes basin.