Cadereyta II Wastewater Treatment Plant, Cadereyta Jiménez, Nuevo León, Mexico

Cadereyta II is a wastewater treatment plant located in Cadereyta Jiménez, Nuevo León, Mexico. It serves a population of approximately 42,079 people, classifying it as a medium-sized municipal facility in the region. The plant is situated in the urban area of Cadereyta Jiménez, a city in northeastern Mexico. As a Mexican wastewater treatment plant, Cadereyta II is subject to the national water quality standards established by the Comisión Nacional del Agua (CONAGUA). These regulations require appropriate treatment levels based on the receiving water body and population served. For a facility of this scale, secondary treatment is typically expected to meet effluent standards for discharge into surface waters. The plant's treated effluent likely discharges into a local watercourse within the San Juan River basin, which flows into the Rio Grande (Río Bravo) and ultimately reaches the Gulf of Mexico. This downstream connection underscores the plant's role in protecting both local aquatic ecosystems and the broader coastal environment of the Gulf of Mexico.

Cadereyta II discharges into the San Juan River watershed, a tributary of the Rio Grande (Río Bravo). The Rio Grande flows into the Gulf of Mexico, supporting diverse aquatic habitats including estuaries and coastal wetlands. The plant's treatment performance is critical for maintaining water quality in this transboundary river system, which provides irrigation and drinking water for communities on both sides of the US-Mexico border.