Tarkio WWTP - Secondary Wastewater Treatment in Tarkio, Missouri

Tarkio WWTP is a municipal wastewater treatment facility located in Tarkio, Atchison County, Missouri, United States. The plant serves a population of approximately 1,583 residents, classifying it as a small-scale treatment facility under U.S. EPA guidelines. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for municipal wastewater treatment. Secondary treatment typically involves biological processes to remove organic matter and suspended solids. The plant has a designed capacity of 1,006.92 cubic meters per day and currently discharges 757.08 cubic meters per day, indicating operational capacity below its design limit. The treated effluent from Tarkio WWTP is discharged into local waterways that ultimately drain into the Missouri River watershed. The plant plays a key role in protecting downstream water quality and aquatic ecosystems in the region, supporting the ecological health of the Missouri River basin.

Tarkio WWTP discharges into local streams that flow into the Missouri River, a major tributary of the Mississippi River. The Missouri River watershed supports diverse aquatic life and provides critical habitat for fish and migratory birds. The plant's secondary treatment helps reduce nutrient and pollutant loads, protecting downstream water quality in this agriculturally intensive region.