Soto Maynez Wastewater Treatment Plant, Santa Ana de Bavícora, Chihuahua

The Soto Maynez wastewater treatment plant is located in Santa Ana de Bavícora (Soto), within the municipality of Namiquipa, Chihuahua, Mexico. It serves a population of approximately 3,868 people, making it a small-scale facility in a rural inland setting. The plant provides secondary treatment, which is the standard biological treatment level required for municipal wastewater in Mexico under NOM-001-SEMARNAT-1996. With a designed capacity of 449.28 volume units and a discharge volume of 449.28, the plant operates at full capacity. Secondary treatment typically involves biological processes such as activated sludge or trickling filters to reduce organic matter and suspended solids. The treated effluent is discharged into a local water body, likely a stream or arroyo that drains into the larger watershed of the region. The plant's inland location, over 10 km from the coast, means its discharge primarily affects freshwater systems rather than marine environments. The surrounding area is semi-arid, and water quality management is important for local agriculture and ecosystems.

The plant discharges into a local watercourse that is part of the inland drainage basin of Chihuahua. The region's watershed ultimately drains into the Rio Grande (Rio Bravo) basin or endorheic basins of the northern Mexican plateau. The semi-arid climate means that water resources are scarce, and maintaining water quality in receiving streams is critical for downstream communities and livestock. The plant's secondary treatment helps reduce organic pollution, supporting the ecological health of local waterways.