Bullhead City Section 18 WWTF - Arizona Wastewater Treatment Plant

Bullhead City Section 18 WWTF is a municipal wastewater treatment facility located in Bullhead City, Mohave County, Arizona. The plant serves a population of about 7,290 residents, placing it in the small-to-medium agglomeration category for U.S. inland communities. As a U.S. facility, the plant is subject to the Clean Water Act and operates under a National Pollutant Discharge Elimination System (NPDES) permit issued by the Arizona Department of Environmental Quality. For plants of this scale, secondary treatment is typically required, and effluent limits are set to protect the receiving water body. The plant's treated effluent is discharged into the Colorado River basin, which flows through the arid Southwest and ultimately into the Gulf of California. The Colorado River supports critical water supplies for agriculture, municipalities, and ecosystems, including the Colorado River Delta, a vital habitat for migratory birds and aquatic species.

The plant discharges into the Colorado River watershed, which drains through the Mojave Desert region and into the Gulf of California. The Colorado River is a critical water source for the southwestern United States and supports diverse aquatic life, including several endangered fish species. Downstream, the river feeds the Colorado River Delta, an ecologically sensitive area that provides important habitat for migratory birds and estuarine species.