COOLIDGE WWTP - Hamilton County, Kansas Wastewater Treatment Plant

COOLIDGE WWTP is a municipal wastewater treatment plant located in Hamilton County, Kansas, United States. It serves a small population of 86 residents, reflecting the rural character of the area. The plant operates under the regulatory framework of the US Clean Water Act, which requires secondary treatment for municipal facilities. The plant provides secondary treatment, which typically involves biological processes to remove organic matter and suspended solids. Its designed capacity is 60.57 thousand cubic meters per year, with an actual discharge volume of 30.28 thousand cubic meters per year, indicating moderate utilization. As a small facility, it is subject to state-level NPDES permitting administered by the Kansas Department of Health and Environment. The treated effluent is discharged into local waterways that drain into the Arkansas River basin, ultimately reaching the Mississippi River and the Gulf of Mexico. The plant plays a role in protecting local water quality in the semi-arid High Plains region, where water resources are limited and sensitive to pollution.

The plant discharges into tributaries of the Arkansas River, which flows through Kansas and Oklahoma before joining the Mississippi River. The receiving waters support agricultural irrigation and aquatic habitats in a region characterized by low rainfall and high evaporation. Protecting water quality is critical for downstream ecosystems and human uses, including drinking water supplies and recreation.