ADAMS LAKE RSD Wastewater Treatment Plant, Witmer Manor, Indiana

ADAMS LAKE RSD is a municipal wastewater treatment facility located in Witmer Manor, LaGrange County, Indiana. The plant serves a small population of 330 residents, reflecting its role in a rural community. It operates under the regulatory framework of the U.S. Clean Water Act, which requires secondary treatment for municipal plants discharging to surface waters. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. Its designed capacity matches the current discharge volume of 261.19 units, indicating full utilization. As a small facility, it is subject to state-level NPDES permitting overseen by the Indiana Department of Environmental Management, ensuring compliance with effluent limits. The treated effluent is discharged into a local water body, likely a tributary of the St. Joseph River or Elkhart River, which ultimately drains into Lake Michigan via the Maumee River and Lake Erie. This watershed supports diverse aquatic life and recreational uses, making proper treatment essential for downstream water quality.

The plant discharges into a local stream within the St. Joseph River watershed, which flows into the Maumee River and eventually Lake Erie. This region is part of the Great Lakes Basin, an ecologically sensitive area supporting diverse fish populations and migratory birds. The plant's secondary treatment helps protect downstream water quality from nutrient and pathogen pollution.