El Molino Wastewater Treatment Plant, El Molino de Sataya, Sinaloa

El Molino wastewater treatment plant is located in El Molino de Sataya, a locality in the municipality of Navolato, Sinaloa, Mexico. The plant serves a population of approximately 1,504 residents, providing essential sanitation infrastructure for this small community. As a secondary treatment facility, it employs biological processes to reduce organic pollutants and suspended solids before discharge. The plant has a designed capacity of 181.44 cubic meters per day and currently discharges 172.80 cubic meters per day, indicating it operates near its design capacity. In Mexico, wastewater treatment plants are regulated under the National Water Law (Ley de Aguas Nacionales) and the Federal Law for the Prevention and Control of Environmental Pollution. For small communities like El Molino de Sataya, secondary treatment is the standard requirement to protect public health and the environment. The treated effluent from El Molino likely discharges into local watercourses that drain into the Pacific Ocean via the Sinaloa river system. The region's coastal lagoons and estuaries are ecologically important, supporting diverse aquatic life and providing critical habitat for migratory birds. Proper treatment at this plant helps reduce nutrient and pathogen loads, safeguarding downstream water quality and ecosystem health.

The plant's treated effluent flows into local waterways that are part of the Sinaloa river basin, eventually reaching the Pacific Ocean. This coastal region features extensive mangrove forests and lagoons that serve as nurseries for fish and crustaceans, supporting both biodiversity and local fisheries. Effective wastewater treatment is crucial to prevent eutrophication and protect these sensitive estuarine habitats.