Overview
Salina Cruz I is a municipal wastewater treatment plant in Salina Cruz, Oaxaca, Mexico, serving approximately 24,661 people. It has a designed capacity of 1.00 unit and is located within 50 km of the Pacific coast.
Salina Cruz I is a municipal wastewater treatment plant located in the port city of Salina Cruz, Oaxaca, on the Pacific coast of Mexico. The plant serves an estimated population of 24,661, placing it in the medium agglomeration category for Mexican wastewater infrastructure. As a plant serving a medium-sized urban population, Salina Cruz I is expected to meet secondary treatment standards under Mexican Official Standard NOM-001-SEMARNAT-1996, which sets maximum pollutant levels for wastewater discharged into national waters. Facilities of this scale typically employ conventional biological treatment methods such as activated sludge or stabilization ponds. The plant's treated effluent likely discharges into the Pacific Ocean via local drainage, given its coastal proximity. Salina Cruz is an important industrial and shipping hub, and the plant plays a key role in protecting the marine environment of the Gulf of Tehuantepec. The receiving waters support diverse aquatic life and are part of a broader coastal ecosystem that includes mangroves and estuaries.
Environmental context
Salina Cruz I is situated near the Pacific coast of Oaxaca, within the Gulf of Tehuantepec watershed. Treated wastewater from the plant likely flows into local arroyos or directly into the Pacific Ocean, affecting the coastal marine environment. The Gulf of Tehuantepec is ecologically significant, supporting fisheries, mangrove forests, and migratory bird habitats. Proper treatment is essential to prevent nutrient loading and contamination that could harm these sensitive coastal ecosystems.
Frequently asked questions
Salina Cruz I is located on Avenida La Ventosa in Salina Cruz, Oaxaca, Mexico, near the Pacific coast.
The plant serves approximately 24,661 people in the Salina Cruz urban area.
Given its coastal proximity, treated effluent from Salina Cruz I likely discharges into the Pacific Ocean via local drainage channels or directly into the Gulf of Tehuantepec.
The plant operates under Mexican federal water quality standards, primarily NOM-001-SEMARNAT-1996, which sets discharge limits for pollutants into national waters. CONAGUA oversees permitting and compliance.
For medium-sized agglomerations like Salina Cruz, secondary treatment is standard, often using activated sludge, aerated lagoons, or stabilization ponds to meet NOM-001 requirements.
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