ASHLEY VALLEY SMB Wastewater Treatment Plant, Vernal, Utah

ASHLEY VALLEY SMB is a municipal wastewater treatment plant located in Vernal, Utah, serving a population of around 19,224. Situated in Uintah County, the facility is part of the region's infrastructure for managing domestic wastewater from the community. As a US-based plant, it operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits and monitoring requirements under the Clean Water Act. For a plant serving this population size, secondary treatment is typically required, with additional nutrient removal if discharging to sensitive waters. The plant's treated effluent likely discharges to a local waterway within the Colorado River Basin, which ultimately drains to the Gulf of California. The surrounding arid climate and reliance on the Colorado River system make water quality management critical for downstream ecosystems and water users.

The plant's discharge enters a tributary of the Green River, which flows into the Colorado River. This basin supports diverse aquatic life and provides water for agriculture and municipalities across the southwestern US. Protecting water quality in this arid region is essential for maintaining ecosystem health and meeting downstream water needs.