Atlantic City STP - Secondary Wastewater Treatment Plant in Atlantic City, Wyoming

Atlantic City STP is a municipal wastewater treatment facility located in Atlantic City, Fremont County, Wyoming, United States. The plant serves a small population of 37 residents, reflecting its role in a rural community. As a secondary treatment plant, it provides biological treatment to reduce organic matter and suspended solids before discharge. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater. Facilities of this scale are typically regulated by the Wyoming Department of Environmental Quality under the National Pollutant Discharge Elimination System (NPDES). The plant's designed capacity of 26.50 units and current discharge volume of 18.93 units indicate it operates below full capacity. The treated effluent is discharged into a local water body, likely a small stream or tributary within the Upper Colorado River Basin. This region is characterized by semi-arid climate and sensitive aquatic ecosystems. The plant's proper operation helps protect downstream water quality in the Colorado River system, which supports agriculture, recreation, and wildlife habitats.

The plant discharges into a local watercourse that is part of the Upper Colorado River Basin, ultimately flowing into the Colorado River and then to the Gulf of California. This watershed supports diverse aquatic life, including native fish species, and is a critical water source for arid southwestern states. The plant's secondary treatment helps reduce nutrient and pollutant loads, protecting downstream ecosystems.