Ramon Corona Wastewater Treatment Plant, Ramón Corona, Durango, Mexico

Ramon Corona is a municipal wastewater treatment plant located in the town of Ramón Corona, within the municipality of Cuencamé, Durango, Mexico. The plant serves a population of approximately 1,783 residents, reflecting its role in managing domestic wastewater for this small community in the semi-arid highlands of northern Mexico. The facility operates with secondary treatment, which is the standard biological process for removing organic matter and suspended solids. With a designed capacity of 423.36 cubic meters per day and an average discharge volume of 216.00 cubic meters per day, the plant operates at about 51% of its capacity, indicating room for future growth. Mexican wastewater treatment plants are regulated under the National Water Law (Ley de Aguas Nacionales) and NOM-001-SEMARNAT-1996, which sets discharge limits for pollutants into national waters. The treated effluent from Ramon Corona is likely discharged into an intermittent stream or arroyo that drains into the larger basin of the Nazas River, which flows through the Comarca Lagunera region and ultimately into the Laguna de Mayran, an endorheic lake system. This watershed supports agricultural irrigation and local ecosystems in a region characterized by scarce water resources.

The plant's discharge enters an ephemeral watercourse within the Nazas River basin, which flows through the arid Durango landscape. The Nazas River is a vital water source for the Comarca Lagunera agricultural region and terminates in the Laguna de Mayran, a shallow lake that supports migratory birds and endemic aquatic species. Proper treatment is essential to prevent nutrient loading and contamination in this water-scarce environment where every drop is reused for irrigation or sustains fragile riparian habitats.