Overview
Francisco I Madero IV is a secondary wastewater treatment plant in Francisco I. Madero (Puga), Nayarit, Mexico, serving 1,825 people. It discharges 172.80 cubic meters of treated wastewater daily.
Francisco I Madero IV is a municipal wastewater treatment plant located in the town of Francisco I. Madero (Puga), within the municipality of Tepic, Nayarit, Mexico. The plant serves a population of 1,825 residents, classifying it as a small-scale facility under Mexican wastewater regulations. The plant provides secondary treatment, which is the standard level required by Mexican environmental law (NOM-001-SEMARNAT-1996) for municipal wastewater before discharge into water bodies. It has a designed capacity of 345.60 cubic meters per day and currently treats 172.80 cubic meters per day, operating at about 50% capacity. This indicates room for future growth or seasonal variations. The treated effluent is discharged into local waterways that ultimately drain into the Pacific Ocean via the Santiago River basin. The region's tropical climate and proximity to the coast make proper wastewater treatment essential for protecting downstream ecosystems, including estuaries and coastal waters that support diverse aquatic life and local fisheries.
Environmental context
The plant discharges into the Santiago River basin, which flows westward through Nayarit and empties into the Pacific Ocean near San Blas. This coastal watershed supports mangrove forests, estuaries, and important fish nurseries. The treated effluent helps maintain water quality in the river, which is used for irrigation and supports biodiversity in the Marismas Nacionales region, a critical wetland ecosystem.
Frequently asked questions
The plant is located in Francisco I. Madero (Puga), a town in the municipality of Tepic, Nayarit, Mexico. Its address is Calle Monterrey, Francisco I. Madero (Puga), Tepic, Nayarit.
The plant serves a population of 1,825 people, making it a small-scale municipal wastewater treatment facility.
The treated effluent is discharged into the Santiago River basin, which flows to the Pacific Ocean. The plant provides secondary treatment to meet Mexican water quality standards before release.
The plant operates under Mexican environmental regulations, primarily NOM-001-SEMARNAT-1996, which sets limits for pollutants in wastewater discharges. For small communities like this, secondary treatment is typically required.
For small agglomerations in Mexico, secondary treatment is standard. This typically involves biological processes like activated sludge or lagoons to reduce organic matter and suspended solids before discharge.
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