BANKSTON STP - Bankston, Iowa Wastewater Treatment Plant

BANKSTON STP is a municipal wastewater treatment plant located in Bankston, Dubuque County, Iowa. It serves a small population of 15 residents, reflecting the rural character of the area. The plant is situated at 24213 Gun Club Road, within the Mississippi River watershed. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for municipal wastewater. With a designed capacity of 15.14 cubic meters per day, it operates under the National Pollutant Discharge Elimination System (NPDES) permitting program, administered by the Iowa Department of Natural Resources. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into local waterways that ultimately drain to the Mississippi River, a major ecological and economic resource. The plant plays a key role in protecting water quality in the region, supporting aquatic life and downstream uses such as recreation and drinking water supply.

The plant's discharge enters tributaries of the Mississippi River, which flows south to the Gulf of Mexico. The Mississippi River basin supports diverse aquatic ecosystems and is a critical migratory corridor for fish and birds. The plant's secondary treatment helps reduce nutrient loads that could contribute to hypoxia in the Gulf.