QUASQUETON STL Wastewater Treatment Plant, Quasqueton, Iowa

QUASQUETON STL is a municipal wastewater treatment facility located in Quasqueton, Iowa, a small community in Buchanan County. The plant serves a population of about 600 residents, providing essential sanitation services for this rural area. The plant operates with secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal facilities. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant has a designed capacity of 143.85 volume units and currently handles a discharge volume of 257.41, indicating it operates within its capacity. Treated effluent from the plant is discharged into local streams that flow into the Wapsipinicon River, a tributary of the Mississippi River. This river system supports diverse aquatic life and is important for regional water quality. The plant's operations are regulated under the National Pollutant Discharge Elimination System (NPDES) permit program to protect downstream ecosystems.

The plant discharges into the Wapsipinicon River watershed, which flows southeast to the Mississippi River. This river system supports a variety of fish and wildlife, including species important for recreational fishing. The watershed is primarily agricultural, so the plant's nutrient removal helps mitigate downstream impacts on the Mississippi River and the Gulf of Mexico.