CHEYENNE CROWCREEK WWTP - Cheyenne, Wyoming Wastewater Treatment Plant

CHEYENNE CROWCREEK WWTP is a municipal wastewater treatment facility located in Cheyenne, Wyoming, serving a population of about 21,813 residents. The plant is situated along Crow Creek and plays a key role in managing wastewater for the state capital and surrounding areas. As a US facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting, typically administered by the Wyoming Department of Environmental Quality. For a population of this size, secondary treatment is the standard requirement, with potential additional nutrient controls to protect downstream water quality. The treated effluent is discharged into Crow Creek, which flows into the South Platte River, a major tributary of the Platte River system. This river network ultimately drains into the Missouri River and the Mississippi River, making the plant's discharge important for water quality across multiple states. The region's semi-arid climate and reliance on surface water for agriculture and recreation underscore the need for effective treatment.

The plant discharges into Crow Creek, a tributary of the South Platte River, which flows through Colorado and Nebraska before joining the Platte River. The South Platte River supports diverse aquatic life and is a critical water source for irrigation and municipal use in the region. Downstream ecosystems include riparian habitats and reservoirs that provide habitat for migratory birds and fish species. The plant's location in the high plains of Wyoming means that water quality management is essential to maintain the ecological health of these water bodies.