Providencia Uno Wastewater Treatment Plant, León, Guanajuato, Mexico

Providencia Uno is a municipal wastewater treatment facility located in León, Guanajuato, Mexico. The plant serves a small community of about 1,825 residents, reflecting its role in managing local domestic wastewater within the urban periphery of León. The plant provides secondary treatment, which is the standard biological process required under Mexican regulations (NOM-001-SEMARNAT) for municipal wastewater before discharge. With a design capacity of 183.17 cubic meters per day and a reported discharge volume of 172.80 cubic meters per day, the facility operates near its intended capacity, ensuring effective treatment of the collected wastewater. The treated effluent is discharged into the local watershed, which ultimately drains into the Lerma River basin, a major hydrological system in central Mexico. The Lerma River flows into Lake Chapala, Mexico's largest freshwater lake, supporting diverse aquatic life and providing water for irrigation and human consumption. Proper treatment at plants like Providencia Uno helps protect downstream water quality and ecosystem health.

The plant discharges into the Lerma River basin, which flows through central Mexico and empties into Lake Chapala, the country's largest freshwater lake. This watershed supports a variety of aquatic species and provides critical water resources for agriculture and communities downstream. Effective wastewater treatment is essential to prevent nutrient loading and contamination that could harm the lake's ecological balance and biodiversity.