Nieves Wastewater Treatment Plant - Zacatecas, Mexico

Nieves wastewater treatment plant is located in the town of Nieves, within the municipality of General Francisco R. Murguía, Zacatecas, Mexico. The plant serves a population of approximately 6,698 residents, making it a small-scale municipal facility. The plant is situated inland, more than 50 km from the coast. As a Mexican wastewater facility, the plant operates under the national regulatory framework, which includes the General Law of Ecological Balance and Environmental Protection (LGEEPA) and the Official Mexican Standards (NOMs) for wastewater discharge. For small agglomerations like Nieves, secondary treatment is typically required to meet discharge standards. Compliance with NOM-001-SEMARNAT-1996 (or its updates) is expected for municipal wastewater. The plant's treated effluent likely discharges into a local watercourse that drains into the interior basin of Zacatecas, a semi-arid region. The area's hydrology is characterized by intermittent streams and seasonal flows, with the nearest significant water body being the Aguanaval River, which flows northward into the Nazas River basin. The plant plays a role in protecting local water quality and public health in this rural community.

The plant's treated wastewater likely discharges into a local arroyo or stream that feeds into the Aguanaval River, part of the endorheic Nazas-Aguanaval basin. This basin is ecologically important in the semi-arid region of north-central Mexico, supporting riparian habitats and agricultural irrigation. The area is home to species such as the Mexican prairie dog and various migratory birds, making water quality management critical for ecosystem health.