DELAWARE STL Wastewater Treatment Plant, Delaware, Iowa

DELAWARE STL is a municipal wastewater treatment plant located in Delaware, Iowa, serving a small population of 176 residents. The facility is situated in Delaware County and provides essential sanitation services to the local community. The plant employs secondary treatment, which is the standard biological treatment process required by the U.S. Clean Water Act for municipal facilities. With a designed capacity of 75.71 units, the plant operates at full capacity based on reported discharge volume. As a small-scale facility, it falls under the regulatory oversight of the Iowa Department of Natural Resources, which issues NPDES permits to ensure compliance with water quality standards. The treated effluent is discharged into local waterways that ultimately drain into the Mississippi River basin. The plant's location in the Upper Mississippi River watershed means its discharge contributes to the overall water quality of this major river system, which supports diverse aquatic life and provides drinking water for millions downstream.

The plant discharges into the Upper Mississippi River basin, a major watershed that drains into the Mississippi River and eventually the Gulf of Mexico. This region supports diverse aquatic ecosystems, including fish and migratory birds. The plant's secondary treatment helps reduce organic pollutants and protect downstream water quality in this agriculturally intensive area.