CROOK WWTP - Secondary Wastewater Treatment in Logan County, Colorado

CROOK WWTP is a municipal wastewater treatment plant located in Logan County, Colorado, serving a small population of 171 residents. The facility operates under the regulatory framework of the U.S. Clean Water Act, which requires secondary treatment for municipal plants discharging to surface waters. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a designed capacity of 75.71 units, the facility is sized appropriately for its small service area. As a U.S. plant, it operates under an EPA NPDES permit issued by the Colorado Department of Public Health and Environment, ensuring compliance with water quality standards. The treated effluent is discharged into a local water body that ultimately drains into the South Platte River basin, a major tributary of the Platte River system. This watershed supports agricultural irrigation and provides habitat for diverse aquatic species, making proper treatment essential for downstream water quality.

The plant's discharge enters a local watercourse within the South Platte River basin, which flows through eastern Colorado and Nebraska before joining the Platte River. This watershed is a critical resource for agriculture and supports a variety of fish and bird species. The region's semi-arid climate makes water quality management particularly important for maintaining ecosystem health and ensuring safe water for downstream uses.