Huehuetan Wastewater Treatment Plant, Azoyú, Guerrero, Mexico

The Huehuetan wastewater treatment plant is located in Azoyú, Guerrero, Mexico, serving a population of about 5,500. The plant provides secondary treatment, a standard level for communities of this size in Mexico, and has a designed capacity of 1,036.80 cubic meters per day, with a current discharge volume of 518.40 cubic meters per day. Under Mexican regulations (NOM-001-SEMARNAT-1996 and subsequent updates), wastewater treatment plants must meet specific discharge standards based on the receiving water body. Secondary treatment typically achieves significant reduction in biochemical oxygen demand and suspended solids, aligning with national environmental goals for water quality. The plant's treated effluent likely discharges into local waterways that drain towards the Pacific Ocean, given its proximity to the coast (within 50 km). The region's watershed supports diverse aquatic life and is important for local agriculture and fisheries. Proper treatment helps protect downstream ecosystems and public health.

The plant is located in Guerrero, a coastal state along the Pacific Ocean. Treated wastewater likely flows into local streams and rivers that eventually reach the Pacific, supporting estuarine and marine habitats. The region's watershed is ecologically sensitive, providing habitat for fish and migratory birds. Effective treatment reduces nutrient and pollutant loads, safeguarding water quality for downstream communities and ecosystems.