Rockfield RSD Wastewater Treatment Plant | Rockfield, Indiana

Rockfield RSD is a municipal wastewater treatment facility located in Rockfield, Carroll County, Indiana, United States. The plant serves a small community of 240 residents, reflecting its role as a local infrastructure asset for this rural area. The plant provides secondary treatment, a standard level required under the US Clean Water Act for facilities of this scale. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids before discharge. The plant's designed capacity is 113.56 volume units, with a similar discharge volume, indicating consistent operation. Treated effluent from Rockfield RSD is discharged into nearby waterways that ultimately drain into the Wabash River basin, a major tributary of the Ohio River and part of the Mississippi River system. This watershed supports diverse aquatic life and is important for regional water quality. The plant's operations are subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Indiana Department of Environmental Management.

The plant discharges into local streams that flow into the Wabash River, a key tributary of the Ohio River. The Wabash River basin supports a variety of fish and wildlife, including several species of freshwater mussels. Downstream, the Ohio River joins the Mississippi River, ultimately reaching the Gulf of Mexico. The plant's secondary treatment helps protect these water bodies from excessive nutrient and organic pollution.