PedriceNa Wastewater Treatment Plant, Pedriceña, Durango, Mexico

PedriceNa is a municipal wastewater treatment plant located in Pedriceña, a locality in the municipality of Cuencamé, Durango, Mexico. The plant serves a population of 1,825 people, placing it in the small-agglomeration category typical of rural communities in northern Mexico. The plant provides secondary treatment, which is the standard level required under Mexican regulations (NOM-001-SEMARNAT) for discharge into inland water bodies. Its designed capacity is 276.48 m³/day, and it currently treats 172.80 m³/day, indicating operational headroom. As a small facility, it likely uses conventional biological treatment processes such as activated sludge or lagoons, common for communities of this scale in arid regions. The treated effluent is discharged into the local watershed, which ultimately drains into the Nazas River basin, a vital water source for agriculture and ecosystems in the Comarca Lagunera region. The plant plays a key role in protecting local water quality and supporting downstream communities and habitats in this semi-arid environment.

PedriceNa discharges into the Nazas River basin, which flows through the arid landscapes of Durango and Coahuila before terminating in the Laguna de Mayran, an endorheic lake. This watershed supports irrigated agriculture and provides critical habitat for migratory birds and endemic aquatic species. The plant's secondary treatment helps reduce organic loads and suspended solids, mitigating eutrophication risks in downstream water bodies.