El Batallon Wastewater Treatment Plant | El Batallón de los Payán, Sinaloa, Mexico

El Batallon wastewater treatment plant is located in El Batallón de los Payán, a locality in the municipality of Angostura, Sinaloa, Mexico. The plant serves a small population of 274 residents, reflecting its role in a rural or semi-urban setting. It operates under Mexico's national water regulations, which require treatment for municipal wastewater. The plant provides secondary treatment, a standard level for small communities in Mexico, ensuring removal of organic matter and suspended solids. It has a designed capacity of 34.56 cubic meters per day and currently discharges 25.92 cubic meters per day, indicating operational headroom. Secondary treatment typically involves biological processes such as activated sludge or lagoons. The treated effluent is discharged into local water bodies, likely contributing to the drainage system of the Sinaloa region. The plant's inland location, over 50 km from the coast, means its discharge affects freshwater systems rather than marine environments. This supports local water quality and ecosystem health in the surrounding watershed.

The plant discharges into the inland watershed of Sinaloa, a state with significant agricultural activity. The receiving water body is likely a local stream or arroyo that drains into larger rivers such as the Río Sinaloa or Río Fuerte, eventually reaching the Gulf of California. The region supports diverse aquatic life and is important for irrigation and local biodiversity. Secondary treatment helps reduce nutrient loading and organic pollution, protecting downstream water quality.