Blue Rapids WWTP - Secondary Treatment Plant in Blue Rapids, Kansas

Blue Rapids WWTP is a municipal wastewater treatment plant located on Vista Road in Blue Rapids, Marshall County, Kansas. The facility serves a small population of about 1,087 people, reflecting the rural character of the community. It operates under the regulatory framework of the U.S. Clean Water Act, which governs wastewater discharges through the National Pollutant Discharge Elimination System (NPDES) permit program. The plant provides secondary treatment, a standard level for small communities in the United States. Its designed capacity is 605.66 cubic meters per day, with an average daily discharge volume of 416.40 cubic meters, indicating operational headroom. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into a local watercourse that flows into the Big Blue River, a tributary of the Kansas River, which ultimately drains into the Missouri River and then the Mississippi River. This watershed supports diverse aquatic life and provides water for agriculture and recreation in the region. The plant's location inland, away from coastal areas, reduces direct marine impact.

The plant discharges into a local stream that feeds the Big Blue River, part of the Kansas River basin. This watershed drains into the Missouri River and eventually the Mississippi River, supporting a network of freshwater habitats. The receiving waters are ecologically sensitive, sustaining fish populations and migratory birds. The plant's secondary treatment helps protect water quality in this inland system.