Congregacion Ortiz Wastewater Treatment Plant, Rosales, Chihuahua

Congregacion Ortiz is a wastewater treatment plant located in Rosales, Chihuahua, Mexico. It serves a small community of 3,651 residents, providing essential sanitation infrastructure for the region. The plant is situated inland, more than 10 km from the coast, and operates under Mexico's national water regulations. The plant employs secondary treatment processes, which involve biological treatment to reduce organic matter and suspended solids. Its designed capacity is 691.20 m³/day, with an actual discharge volume of 345.60 m³/day, indicating it operates below capacity. This scale of plant is typical for small agglomerations in Mexico, where treatment standards are set by the National Water Commission (CONAGUA). The treated effluent is discharged into local water bodies, contributing to the protection of the Rio Conchos basin, which ultimately drains into the Rio Grande and the Gulf of Mexico. Proper treatment helps safeguard downstream ecosystems and supports water quality in this arid region of northern Mexico.

The plant discharges into the Rio Conchos watershed, a tributary of the Rio Grande (Bravo). This basin supports diverse aquatic life and is ecologically sensitive due to water scarcity in the Chihuahuan Desert. Downstream, the Rio Grande flows into the Gulf of Mexico, where nutrient loading from upstream sources can impact coastal ecosystems. The plant's secondary treatment helps reduce organic pollution and protect these waters.