Yavapai Apache Nation Tunlii WWTP - Gila County, Arizona Wastewater Treatment

Yavapai Apache Nation Tunlii WWTP is a wastewater treatment facility located in Gila County, Arizona, United States. The plant serves a small population of 690 people, reflecting its role in a rural or tribal community setting. It operates under the regulatory framework of the US Clean Water Act, which governs discharge standards for facilities of this scale. The plant provides secondary treatment, a standard level for municipal wastewater in the United States. It has a designed capacity of 454.25 volume units and currently discharges 261.19 volume units daily, indicating operational headroom. As a US facility, it is subject to National Pollutant Discharge Elimination System (NPDES) permitting, which sets effluent limits to protect water quality. The treated effluent is discharged into the local watershed, which ultimately drains into the Verde River and then the Salt River system, part of the Colorado River basin. This region supports diverse aquatic life and is important for water supply in arid Arizona. The plant's operations help maintain downstream water quality in this ecologically sensitive area.

The plant discharges into the Verde River watershed, which flows into the Salt River and eventually the Colorado River. This arid region relies on these water bodies for municipal and agricultural supply, and the plant's secondary treatment helps protect downstream aquatic ecosystems, including fish and riparian habitats.