Los Reyes Wastewater Treatment Plant, Cerro Gordo, Veracruz

Los Reyes is a wastewater treatment plant located in Cerro Gordo, within the municipality of Emiliano Zapata, Veracruz, Mexico. The plant serves a small community of 913 people, providing secondary treatment to manage local wastewater. It is situated inland, more than 10 kilometers from the coast, but within 50 kilometers of the Gulf of Mexico. The plant operates with a designed capacity of 86.40 cubic meters per day and discharges a similar volume of treated effluent. As a secondary treatment facility, it meets the basic standards for organic matter removal. In Mexico, wastewater treatment plants are regulated under NOM-001-SEMARNAT-1996, which sets limits for pollutants in discharges to national waters. For small communities like this, secondary treatment is typically adequate to protect local water quality. The treated effluent from Los Reyes likely drains into a local stream or river that flows toward the Gulf of Mexico, contributing to the hydrological network of the region. The plant plays a role in safeguarding downstream water bodies from untreated sewage, supporting both environmental health and public sanitation in the area.

The plant's discharge enters a local watercourse that eventually reaches the Gulf of Mexico, a major marine ecosystem. The region's watershed supports diverse aquatic life and provides important habitat for migratory species. Secondary treatment reduces organic pollutants, helping to maintain water quality in downstream rivers and coastal areas, which are ecologically sensitive and support local fisheries.