Overview
STANLEY STL is a secondary wastewater treatment plant in Stanley, Iowa, serving a small population of 128. It discharges 75.71 units of treated effluent and operates under U.S. EPA NPDES permitting.
STANLEY STL is a municipal wastewater treatment facility located on 100th Street in Stanley, Buchanan County, Iowa. The plant serves a small community of 128 residents, reflecting its role as a local-scale infrastructure asset in rural Iowa. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for most municipal facilities. Its designed capacity is 75.71 units, matching the reported discharge volume, indicating consistent operation. As a small agglomeration, it falls under state-level NPDES permitting administered by the Iowa Department of Natural Resources. The treated effluent is discharged into local waterways that drain into the Wapsipinicon River, a tributary of the Mississippi River. This places the plant within the larger Mississippi River basin, contributing to the water quality management of this major continental watershed. The surrounding area is predominantly agricultural, making nutrient control a key environmental consideration.
Environmental context
The plant's discharge enters local streams that flow into the Wapsipinicon River, which eventually joins the Mississippi River. The Mississippi River basin supports diverse aquatic life and is a critical migratory corridor for fish and birds. Downstream, the river system influences the Gulf of Mexico's hypoxic zone, highlighting the importance of nutrient management from all sources in the watershed.
Frequently asked questions
STANLEY STL is located on 100th Street in Stanley, Buchanan County, Iowa, United States.
The plant serves a small community of 128 residents.
The plant discharges treated effluent into local waterways that drain into the Wapsipinicon River, a tributary of the Mississippi River.
The plant provides secondary treatment, which is the standard required by the U.S. Clean Water Act for municipal wastewater facilities.
As a small municipal plant in Iowa, STANLEY STL operates under an NPDES permit issued by the Iowa Department of Natural Resources, ensuring compliance with the Clean Water Act.
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