San Salvador El Seco Wastewater Treatment Plant, Puebla, Mexico

The San Salvador El Seco wastewater treatment plant is located in the city of San Salvador el Seco, in the state of Puebla, Mexico. The facility serves a population of about 20,000 residents, providing essential wastewater treatment for this inland community. As a municipal treatment plant in Mexico, the facility operates under the national regulatory framework established by the Ley de Aguas Nacionales and the Normas Oficiales Mexicanas (NOMs), which set discharge standards for wastewater. For a plant serving a population of this scale, secondary treatment is typically required to meet environmental standards. The treated effluent from the plant is discharged into local water bodies that ultimately drain into the Gulf of Mexico via the Papaloapan River basin. The plant plays a key role in protecting downstream water quality and supporting the ecological health of the region's aquatic ecosystems.

The plant discharges into the Papaloapan River basin, which flows eastward through Veracruz and empties into the Gulf of Mexico. This watershed supports diverse aquatic life and provides water for agriculture and communities downstream. The plant's treatment helps reduce nutrient and pollutant loads that could otherwise impact coastal ecosystems in the Gulf.