Saint Charles WWTP - Secondary Treatment Plant in Saint Charles, Arkansas

Saint Charles WWTP is a municipal wastewater treatment plant located in Saint Charles, Arkansas, United States. The facility serves a small population of 230 residents, reflecting its role in a rural community within Arkansas County. The plant provides secondary treatment, which is the standard biological treatment stage required under the U.S. Clean Water Act for municipal wastewater. With a designed capacity of 174.13 volume units and an average discharge of 53.00 volume units, the plant operates well below its capacity, indicating reserve for future growth. The treated effluent is discharged into local waterways that ultimately drain into the Mississippi River basin. The plant's operations help protect downstream water quality in the Arkansas Delta region, supporting aquatic habitats and recreational uses.

The plant discharges into tributaries of the Arkansas River, which flows into the Mississippi River and eventually the Gulf of Mexico. The local watershed supports diverse aquatic life and is part of the Mississippi Flyway, an important migratory corridor for birds. Protecting water quality in this region helps maintain the ecological health of the delta and coastal estuaries.