SEDAN WWTP - Chautauqua County, Kansas Wastewater Treatment Plant

SEDAN WWTP is a municipal wastewater treatment facility located in Chautauqua County, Kansas, United States. The plant serves a population of 1,475 and operates at a secondary treatment level, which is the standard for small communities under the US Clean Water Act. The plant's designed capacity is 605.66 million gallons, with an actual discharge volume of 476.96 million gallons per year. As a secondary treatment facility, it uses biological processes to remove organic matter and suspended solids, meeting EPA effluent guidelines for small to medium-sized plants. The treated effluent is discharged into a local waterway within the Arkansas River basin, which ultimately drains to the Mississippi River and the Gulf of Mexico. The plant plays a role in protecting downstream water quality in this agriculturally intensive region of the Great Plains.

The plant discharges into a tributary of the Arkansas River, which flows through Kansas and Oklahoma before joining the Mississippi River and reaching the Gulf of Mexico. The local watershed supports agricultural activities and diverse aquatic life, including fish species such as channel catfish and largemouth bass. The plant's secondary treatment helps reduce nutrient loading and protect downstream ecosystems.