Overview
La Salada wastewater treatment plant serves Guaymas, Sonora, Mexico, with a population equivalent of 179,217. Located within 50 km of the coast, it discharges into the Gulf of California.
La Salada is a municipal wastewater treatment plant located in Guaymas, Sonora, Mexico, serving a population of approximately 179,217. The plant is situated in an arid coastal region along the Gulf of California, an ecologically important marine environment. As a large agglomeration serving over 150,000 people, the plant is expected to meet Mexico's national wastewater standards (NOM-001-SEMARNAT), which require secondary treatment and pollutant limits for discharge into coastal waters. Facilities of this scale typically employ secondary biological treatment to comply with regulations. The treated effluent is discharged into the Gulf of California, a semi-enclosed sea with high biodiversity and significant fisheries. The plant's proximity to the coast (within 50 km) means its discharge can directly affect marine water quality, making proper treatment essential for protecting local ecosystems and human health.
Environmental context
The plant discharges into the Gulf of California, a biologically rich sea that supports diverse marine life including sea turtles, whales, and commercially important fish species. The Gulf is a critical habitat for migratory species and is influenced by tidal flows and seasonal upwelling. Downstream, the waters flow into the Pacific Ocean. Protecting water quality in this region is vital for sustaining local fisheries and tourism.
Frequently asked questions
La Salada is located in Guaymas, Sonora, Mexico, at Avenida José de Jesús Alfaro Siqueiros, Guaymas, Sonora, 85400.
La Salada serves a population equivalent of 179,217, classifying it as a large agglomeration under Mexican regulations.
The plant discharges treated effluent into the Gulf of California, a coastal marine environment. As a facility within 50 km of the coast, it must meet strict discharge standards for coastal waters under Mexican law.
La Salada operates under Mexico's NOM-001-SEMARNAT, which sets maximum permissible limits for pollutants in wastewater discharges into national waters, including coastal zones. Plants serving over 150,000 people are required to implement secondary treatment and meet specific effluent quality criteria.
For large agglomerations in Mexico, typical treatment includes secondary biological processes such as activated sludge or aerated lagoons, often with disinfection. These systems are designed to remove organic matter, solids, and pathogens to comply with NOM-001-SEMARNAT standards for coastal discharge.
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