Cascade WWTF - Secondary Wastewater Treatment in Cascade County, Montana

Cascade WWTF is a municipal wastewater treatment facility located in Cascade County, Montana, United States. The plant serves a small population of 871 residents, reflecting its role in a rural or semi-rural community. It operates under the regulatory framework of the U.S. Clean Water Act, which requires secondary treatment for municipal discharges to surface waters. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. Its designed capacity is 314.19 million gallons, and it discharges approximately 359.61 million gallons of treated wastewater annually. As a small facility, it is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Montana Department of Environmental Quality, ensuring compliance with water quality standards. The treated effluent from Cascade WWTF likely discharges into a local waterway within the Missouri River basin, which ultimately drains into the Mississippi River and the Gulf of Mexico. The plant's operations help protect downstream aquatic ecosystems and maintain water quality in the region's rivers and streams.

Cascade WWTF discharges into a tributary of the Missouri River, which flows through Montana and joins the Mississippi River system before reaching the Gulf of Mexico. The local watershed supports diverse aquatic life, including fish species such as trout and bass. The plant's secondary treatment reduces organic pollutants and suspended solids, helping to maintain the ecological health of the receiving water body and downstream environments.