Herreras Wastewater Treatment Plant, Los Herreras, Nuevo León, Mexico

Herreras is a wastewater treatment plant located in Los Herreras, Nuevo León, Mexico. It serves a small community of approximately 1,843 people, providing essential sanitation infrastructure for this inland municipality in northeastern Mexico. The plant operates with secondary treatment, which is appropriate for its scale. Under Mexican regulations (NOM-001-SEMARNAT-1996), secondary treatment is standard for municipal wastewater to reduce organic matter and suspended solids before discharge. The plant has a designed capacity of 1,296 m³/day and currently discharges 345.6 m³/day, indicating ample reserve capacity. The treated effluent from Herreras ultimately drains into the San Fernando River basin, which flows eastward into the Gulf of Mexico. This watershed supports agricultural activities and diverse aquatic habitats. Proper treatment at Herreras helps protect downstream water quality and the ecological health of the river system.

Herreras is located in the San Fernando River basin, which drains into the Gulf of Mexico. The receiving waters support a variety of aquatic life and are used for irrigation in the surrounding agricultural region. The plant's secondary treatment reduces organic pollutants and suspended solids, helping to maintain the ecological balance of the downstream environment and prevent eutrophication in coastal waters.