San Antonio La Isla Wastewater Treatment Plant - Estado de México, Mexico

San Antonio La Isla wastewater treatment plant is located in the municipality of San Antonio La Isla, Estado de México, Mexico. The plant serves a population of approximately 7,357 residents, providing secondary treatment for municipal wastewater. With a designed capacity of 3,456 cubic meters per day, the plant currently discharges 696.38 cubic meters of treated effluent daily. The plant operates under Mexico's national water regulations, which require secondary treatment for municipal wastewater. As a smaller facility serving fewer than 10,000 people, it falls under the category of small agglomerations. The treatment process ensures that effluent meets quality standards before discharge into the local environment. The treated wastewater from San Antonio La Isla is discharged into the Lerma River basin, which flows into Lake Chapala, Mexico's largest freshwater lake. The Lerma-Chapala basin is a critical water resource for the region, supporting agriculture, industry, and biodiversity. The plant's operation helps protect downstream water quality and aquatic ecosystems.

The plant discharges into the Lerma River basin, which drains into Lake Chapala, the largest lake in Mexico. This watershed supports diverse aquatic life and provides water for irrigation and human consumption. The Lerma-Chapala basin is ecologically sensitive, and the plant's secondary treatment helps reduce nutrient loads and organic pollution, mitigating eutrophication risks in the lake.