Loma de Tecuyo Wastewater Treatment Plant, Sinaloa, Mexico

Loma de Tecuyo is a wastewater treatment plant located in the rural community of Buenavista, within the municipality of Elota, Sinaloa, Mexico. It serves a small population of 412 residents, reflecting the scale of local infrastructure in this coastal region of northwestern Mexico. The plant employs secondary treatment, which is appropriate for its size and aligns with Mexican regulatory standards (NOM-001-SEMARNAT) that require biological treatment for municipal wastewater. With a designed capacity of 112.32 m³/day and a current discharge volume of 95.04 m³/day, the facility operates below its maximum capacity, indicating room for future growth. The treated effluent is discharged into the local environment, likely into a nearby arroyo or drainage channel that eventually flows into the Pacific Ocean. Sinaloa's coastal ecosystems, including mangroves and estuaries, are sensitive to nutrient loading, making proper treatment essential for protecting downstream water quality and marine life.

The plant discharges into the Pacific Ocean watershed via local arroyos that drain the coastal plain of Sinaloa. This region supports ecologically important mangrove forests and estuarine habitats that serve as nurseries for fish and crustaceans. Nutrient-rich discharges could contribute to eutrophication in coastal waters, emphasizing the need for effective secondary treatment to minimize environmental impact.