Valley Vista Collection Wastewater Treatment Plant, Yuma County, Arizona

Valley Vista Collection is a wastewater treatment plant located in Yuma County, Arizona, United States. The facility serves a small population of around 300 residents and operates under secondary treatment standards, which is the minimum required by the U.S. Clean Water Act for municipal wastewater plants. As a secondary treatment plant, Valley Vista Collection uses biological processes to remove organic matter and suspended solids from wastewater. The plant has a designed capacity of 151.42 megaliters per year and currently discharges 75.71 megaliters annually, indicating it operates below its full capacity. The facility is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The treated effluent from Valley Vista Collection is discharged into the local watershed, which ultimately drains into the Colorado River basin. The Colorado River is a critical water source for the arid southwestern United States, supporting agriculture, municipalities, and ecosystems. The plant's discharge contributes to the river's flow and must meet stringent water quality standards to protect downstream uses and aquatic life.

The plant discharges into the Colorado River basin, which flows through the arid Southwest and empties into the Gulf of California. The Colorado River supports diverse aquatic ecosystems and is a vital water source for millions of people. Downstream, the river's delta and estuary provide critical habitat for migratory birds and endangered species, making water quality management essential for ecological health.