Concepcion PApalo Wastewater Treatment Plant, Concepción Pápalo, Oaxaca

Concepcion PApalo is a municipal wastewater treatment facility located in Concepción Pápalo, a town in the state of Oaxaca, Mexico. The plant serves a population of approximately 2,738 residents, providing secondary treatment to manage domestic wastewater from the community. The plant operates with a designed capacity of 432.00 cubic meters per day and currently treats a daily flow of 259.20 cubic meters. As a secondary treatment facility, it employs biological processes to reduce organic matter and suspended solids, meeting the standard treatment requirements for small agglomerations in Mexico under the national water law (Ley de Aguas Nacionales) and NOM-001-SEMARNAT-1996 regulations. The treated effluent is discharged into local watercourses that ultimately drain into the Papaloapan River basin, a major hydrological region in southern Mexico. The plant plays a crucial role in protecting downstream water quality and supporting the ecological health of the region's rivers and coastal lagoons.

The plant discharges into the Papaloapan River basin, which flows through Oaxaca and Veracruz before emptying into the Gulf of Mexico via the Alvarado Lagoon system. This watershed supports diverse aquatic life and is important for local fisheries and agriculture. The secondary treatment provided by the plant helps reduce nutrient and organic pollution, mitigating eutrophication risks in downstream water bodies.