Overview
Castellanos wastewater treatment plant serves San José de Castellanos, Zacatecas, Mexico, with secondary treatment for a population of 3,173. It discharges 302.40 m³/day of treated wastewater, operating under Mexico's national water regulations.
Castellanos wastewater treatment plant is located in San José de Castellanos, within the municipality of Pinos, Zacatecas, Mexico. The facility provides secondary treatment for a population of approximately 3,173 residents, reflecting its role in managing domestic wastewater for this small community. The plant has a designed capacity of 354.24 m³/day and currently treats 302.40 m³/day of wastewater. As a secondary treatment facility, it meets the standard requirements for organic matter and suspended solids removal. In Mexico, wastewater treatment plants of this scale are regulated under the National Water Law (Ley de Aguas Nacionales) and NOM-001-SEMARNAT-1996, which sets discharge limits for pollutants into national waters. The treated effluent is discharged into local water bodies that ultimately drain into the endorheic basin of the Mexican Plateau. The region's semi-arid climate means that water resources are scarce, making the plant's role in protecting local water quality and enabling potential reuse critical for the surrounding environment and communities.
Environmental context
The plant discharges into local streams that are part of the endorheic basin of the Mexican Plateau, where water does not reach the sea but accumulates in inland lakes or evaporates. This watershed supports limited aquatic life adapted to seasonal flows and high evaporation rates. The treated effluent helps maintain water quality in these sensitive arid-land ecosystems, preventing eutrophication and protecting groundwater recharge areas.
Frequently asked questions
The Castellanos wastewater treatment plant is located in San José de Castellanos, in the municipality of Pinos, Zacatecas, Mexico.
The plant serves a population of approximately 3,173 residents, making it a small-scale municipal facility.
The plant provides secondary treatment, which typically involves biological processes to remove organic matter and suspended solids from wastewater.
The plant operates under Mexico's National Water Law and NOM-001-SEMARNAT-1996, which set discharge limits for pollutants. Secondary treatment is standard for facilities of this size to protect water quality in receiving water bodies.
The plant discharges approximately 302.40 cubic meters per day of treated wastewater, which is below its designed capacity of 354.24 cubic meters per day.
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