Schaller Lagoon Wastewater Treatment Plant, Schaller, Iowa

Schaller Lagoon is a municipal wastewater treatment facility located in Schaller, Iowa, United States. The plant serves a small community of approximately 768 residents, reflecting its role in managing local domestic wastewater. As a lagoon-based system, it provides secondary treatment, which is typical for smaller agglomerations in rural areas. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater discharges. With a designed capacity of 416.39 volume units and a discharge volume of 227.13, the facility is sized to handle the community's wastewater needs. Regulatory oversight is provided by the Iowa Department of Natural Resources, which issues National Pollutant Discharge Elimination System (NPDES) permits for such facilities. The treated effluent is discharged into local waterways that drain into the Missouri River basin, ultimately reaching the Gulf of Mexico. The plant plays a key role in protecting downstream water quality in this agricultural region, reducing nutrient and pathogen loads before discharge.

The plant discharges into local streams that are part of the Missouri River watershed, which flows into the Mississippi River and eventually the Gulf of Mexico. This region is dominated by agriculture, and the plant helps mitigate nutrient pollution that could contribute to hypoxia in the Gulf. The surrounding area supports diverse aquatic life and is an important part of the regional ecosystem.