Huitzilan de Serdan Wastewater Treatment Plant, Huitzilan, Puebla, Mexico

The Huitzilan de Serdan wastewater treatment plant is located in the town of Huitzilan, within the municipality of Huitzilan de Serdan in the state of Puebla, Mexico. It serves a population of approximately 2,373 residents, providing secondary treatment to manage municipal wastewater. The plant has a designed capacity of 224.64 cubic meters per day and operates at full capacity based on reported discharge volume. As a secondary treatment facility, the plant employs biological processes to reduce organic matter and suspended solids, meeting Mexican regulatory standards for wastewater treatment. In Mexico, plants of this scale are typically regulated under NOM-001-SEMARNAT-1996, which sets limits for pollutants in treated wastewater discharged to national waters. The plant's performance is subject to monitoring by local water authorities. The treated effluent is discharged into local water bodies that eventually drain into the Gulf of Mexico via the Tecolutla River system. The plant plays a crucial role in protecting downstream aquatic ecosystems and maintaining water quality in the region's rivers, which support diverse freshwater species and agricultural activities.

The plant discharges into the Tecolutla River basin, which flows eastward through the Sierra Norte de Puebla and empties into the Gulf of Mexico. This watershed supports a variety of aquatic life and is important for local agriculture and fisheries. The secondary treatment provided helps reduce nutrient and organic pollution, safeguarding downstream water quality and the ecological health of the river and coastal zone.