Naica Wastewater Treatment Plant - Chihuahua, Mexico

The Naica wastewater treatment plant is located in the town of Naica, within the municipality of Saucillo, Chihuahua, Mexico. It serves a population of about 6,085 residents, typical of a small agglomeration in northern Mexico. The plant is situated in an arid inland region, far from coastal areas. The facility provides secondary treatment, which is the standard level required under Mexican regulations (NOM-001-SEMARNAT-1996) for municipal wastewater before discharge. The plant has a designed capacity of 1,036.80 volume units and currently processes 820.80 volume units, indicating it operates below its full capacity. This suggests the plant can accommodate future population growth or increased flows. The treated effluent is discharged into a local watercourse that eventually drains into the Rio Conchos basin, a tributary of the Rio Grande (Rio Bravo). This river system supports agricultural irrigation and provides water for communities downstream. The plant's operation helps protect local water quality and reduces pollution in the Rio Conchos watershed.

The Naica plant discharges into the Rio Conchos basin, which flows into the Rio Grande (Rio Bravo) and ultimately reaches the Gulf of Mexico. This watershed is ecologically important for arid-adapted species and supports migratory birds along the Central Flyway. The plant's secondary treatment reduces organic pollutants and suspended solids, helping maintain water quality for downstream agricultural and ecological uses.