Friendship RSD Wastewater Treatment Plant, Friendship, Indiana

Friendship RSD is a municipal wastewater treatment facility located in Friendship, Indiana, within Ripley County. The plant serves a small community of approximately 150 residents, reflecting its role in rural wastewater management in the region. The facility provides secondary treatment, a standard level for small US plants under the Clean Water Act. Its designed capacity is 113.56 units, matching the discharge volume, indicating consistent operation. As a US plant, it operates under an NPDES permit issued by the Indiana Department of Environmental Management, ensuring compliance with federal water quality standards. The treated effluent is discharged into local waterways that ultimately drain into the Ohio River basin. This contributes to the protection of downstream aquatic ecosystems and supports the overall water quality of the Mississippi River watershed.

The plant discharges into local streams that flow into the Ohio River, a major tributary of the Mississippi River. The Ohio River basin supports diverse aquatic life and is an important ecological corridor. The plant's secondary treatment helps reduce nutrient and pollutant loads, protecting downstream water quality in this inland watershed.