Fraccionamiento Fidel Velazquez Wastewater Treatment Plant, Mérida, Yucatán

Fraccionamiento Fidel Velazquez is a wastewater treatment plant located in Mérida, the capital of Yucatán, Mexico. The facility serves a population of 2,373 residents in the Fraccionamiento Fidel Velazquez neighborhood, operating as part of the city's municipal wastewater infrastructure. The plant provides secondary treatment, a standard level for communities of this size in Mexico. With a designed capacity of 691.20 cubic meters per day and a current discharge volume of 224.64 cubic meters per day, the facility operates well below its capacity. Mexican wastewater regulations, such as NOM-001-SEMARNAT, set discharge standards for pollutants like biochemical oxygen demand and total suspended solids. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Gulf of Mexico via the Yucatán Peninsula's karstic aquifer system. This region is ecologically sensitive due to its extensive cenotes and underground rivers, which support unique aquatic ecosystems and provide drinking water for local communities.

The plant discharges into the Yucatán Peninsula's karstic aquifer system, which feeds cenotes and underground rivers that eventually drain into the Gulf of Mexico. This watershed is ecologically sensitive due to its porous limestone geology, which allows rapid infiltration and potential contamination of groundwater. The region supports diverse aquatic life, including endemic species in cenotes, and is an important migratory corridor for birds.