Avoca WW Stab Lagoon - Secondary Wastewater Treatment in Pottawattamie County, Iowa

Avoca WW Stab Lagoon is a wastewater treatment facility located in Knox Township, Pottawattamie County, Iowa, United States. The plant serves a population of approximately 1,497 people, classifying it as a small-scale municipal treatment system in a rural setting. The facility provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal wastewater plants. With a designed capacity of 870.64 million gallons per year and an actual discharge volume of 832.79 million gallons, the plant operates at a high utilization rate, indicating consistent demand for its services. The treated effluent is discharged into local waterways that ultimately drain into the Missouri River watershed. This river system supports diverse aquatic life and provides water for agricultural and recreational uses downstream. Proper treatment at Avoca WW Stab Lagoon helps protect water quality in the region.

The plant discharges into local streams that flow into the Missouri River, a major tributary of the Mississippi River. The Missouri River watershed supports a variety of fish species and provides critical habitat for migratory birds. Effective wastewater treatment is essential to prevent nutrient pollution and maintain the ecological health of this important river system.