Washta WWTP - Secondary Wastewater Treatment in Washta, Iowa

Washta WWTP is a municipal wastewater treatment facility located in Washta, Cherokee County, Iowa. The plant serves a small population of 284 residents, reflecting the rural character of the community. It is situated in the Midwestern United States, an area dominated by agriculture and small towns. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for municipal wastewater facilities. Secondary treatment typically involves biological processes to remove organic matter and suspended solids. The plant's designed capacity is 151.42 units, and it currently treats an average daily flow of 75.71 units, indicating it operates well below its capacity. The treated effluent is discharged into a local waterway, likely a tributary of the Missouri River basin. The plant plays a key role in protecting local water quality and downstream ecosystems, including the Missouri River and ultimately the Mississippi River system. Its operation is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program administered by the Iowa Department of Natural Resources.

The plant discharges into a local stream that drains into the Little Sioux River, a tributary of the Missouri River. The Missouri River flows into the Mississippi River, which empties into the Gulf of Mexico. The watershed supports diverse aquatic life and is important for regional agriculture and recreation. The plant's secondary treatment helps reduce nutrient and organic pollution, mitigating impacts on downstream water bodies.