ANDREW STP Wastewater Treatment Plant, Jackson County, Iowa

ANDREW STP is a municipal wastewater treatment facility located in Jackson County, Iowa, United States. The plant serves a small population of 434 residents, reflecting its role in a rural community. It is situated inland, away from coastal influences, and operates under the regulatory framework of the U.S. Clean Water Act. The plant provides secondary treatment, which is the standard level required by the U.S. Environmental Protection Agency (EPA) for municipal wastewater facilities. With a designed capacity of 302.83 megaliters and an actual discharge volume of 113.56 megaliters, the plant operates well below its capacity. The facility is subject to National Pollutant Discharge Elimination System (NPDES) permits, which set effluent limits to protect water quality. The treated effluent from ANDREW STP is discharged into local waterways that ultimately drain into the Mississippi River basin. This region supports diverse aquatic life and is part of a larger watershed that flows into the Gulf of Mexico. The plant's operations help maintain water quality in the local streams and contribute to the ecological health of the downstream environment.

ANDREW STP discharges into local streams within the Mississippi River basin, which flows south to the Gulf of Mexico. The watershed supports a variety of fish and wildlife, including species that rely on clean water for spawning and migration. The plant's secondary treatment helps reduce nutrient loads and organic pollutants, mitigating impacts on downstream ecosystems.