Los Humayes Wastewater Treatment Plant, Sinaloa, Mexico

Los Humayes is a wastewater treatment plant located in the town of Los Humayes, within the municipality of San Ignacio, Sinaloa, Mexico. The facility serves a small population of 241 residents, reflecting its role in a rural or small community setting. As a secondary treatment plant, it provides biological treatment to reduce organic matter and suspended solids before discharge. The plant has a designed capacity of 69.12 cubic meters per day and currently treats 51.84 cubic meters daily, indicating it operates below its full capacity. In Mexico, wastewater treatment plants are regulated under the National Water Law (Ley de Aguas Nacionales) and overseen by the National Water Commission (CONAGUA). For small communities, secondary treatment is typical to meet basic environmental standards. The treated effluent is discharged into local water bodies that eventually drain into the Pacific Ocean, as the plant is located within 50 kilometers of the coast. The surrounding region includes the Marismas Nacionales system, an ecologically important wetland area that supports diverse aquatic life and migratory birds. Proper treatment helps protect these downstream ecosystems from nutrient pollution and pathogens.

The plant's discharge flows into local streams and rivers that drain into the Pacific Ocean near the coast of Sinaloa. The region includes the Marismas Nacionales, a large coastal wetland complex that provides critical habitat for fish, crustaceans, and migratory waterfowl. Secondary treatment reduces organic load and suspended solids, helping to maintain water quality in this sensitive coastal environment.