Yago Wastewater Treatment Plant, Estación Yago, Nayarit, Mexico

Yago is a municipal wastewater treatment plant located in Estación Yago, within the municipality of Santiago Ixcuintla, Nayarit, Mexico. The facility serves a population of approximately 6,812 residents, providing secondary treatment to manage domestic wastewater from the community. Its designed capacity is 1,296 cubic meters per day, with an average discharge volume of 777.6 cubic meters per day. The plant employs secondary treatment processes, which typically involve biological treatment to reduce organic matter and suspended solids. As a facility in Mexico, it operates under the framework of the National Water Law (Ley de Aguas Nacionales) and is subject to official standards (NOM-001-SEMARNAT-1996) that set discharge limits for pollutants. For a plant of this scale, secondary treatment is standard and meets regulatory requirements for inland discharge. The treated effluent is discharged into local water bodies that eventually drain into the Pacific Ocean via the Santiago River system. The region's watershed supports diverse aquatic life and agricultural activities downstream. Proper treatment helps protect water quality in the surrounding environment, which includes wetlands and coastal ecosystems near the Marismas Nacionales biosphere reserve.

The plant's discharge enters the Santiago River basin, which flows westward through Nayarit and empties into the Pacific Ocean near San Blas. This watershed supports important mangrove forests and estuarine habitats that are critical for migratory birds and marine species. The secondary treatment provided by Yago helps reduce nutrient and organic loads, mitigating eutrophication risks in downstream coastal waters.