Royal Center WWTP - Secondary Treatment Plant in Cass County, Indiana

Royal Center WWTP is a municipal wastewater treatment facility located in Cass County, Indiana, serving a population of 906. The plant provides secondary treatment, a standard level for small communities in the United States, ensuring compliance with Clean Water Act requirements. The plant has a designed capacity of 605.66 million gallons per day and currently treats an average daily flow of 340.69 million gallons, operating well within its capacity. As a secondary treatment facility, it uses biological processes to reduce organic matter and suspended solids before discharge. The treated effluent is released into local streams that drain into the Wabash River, a major tributary of the Ohio River. This watershed supports diverse aquatic life and provides drinking water for downstream communities. The plant's operation helps protect water quality in this agriculturally important region of Indiana.

The plant discharges into local waterways that flow into the Wabash River, which ultimately joins the Ohio River and then the Mississippi River. This watershed supports a variety of fish and wildlife, including several species of freshwater mussels and migratory birds. The region's agricultural land use makes nutrient management a key concern for downstream water quality.