Nadadores Wastewater Treatment Plant | Coahuila, Mexico

The Nadadores wastewater treatment plant is located in the town of Nadadores, in the state of Coahuila, Mexico. It serves a population of approximately 5,905 residents, providing secondary treatment to municipal wastewater. The plant has a designed capacity of 864 m³/day and discharges a similar volume of treated effluent. As a secondary treatment facility, Nadadores meets the standard treatment requirements for Mexican municipalities under the national water law (Ley de Aguas Nacionales) and NOM-001-SEMARNAT-1996, which sets discharge limits for pollutants. For a town of this size, secondary treatment is typical and adequate for protecting local water quality. The treated effluent is discharged into the local watershed, which ultimately drains into the Rio Grande basin. The region's semi-arid climate makes water quality management particularly important for sustaining downstream ecosystems and agricultural uses. The plant plays a key role in preventing untreated sewage from entering local waterways.

The Nadadores plant discharges into the Rio Grande basin, which flows through northern Mexico and Texas before reaching the Gulf of Mexico. This watershed supports diverse aquatic life and is a critical water source for both human consumption and agriculture in the arid region. Proper treatment helps reduce nutrient loading and pathogen risks in downstream water bodies.