Maravillas Wastewater Treatment Plant, Puebla, Mexico

Maravillas wastewater treatment plant is located in the town of Maravillas, within the municipality of Chalchicomula de Sesma, Puebla, Mexico. The facility serves a population of 1,825 and provides secondary treatment, which is a standard biological process that removes organic matter and suspended solids. The plant has a designed capacity of 172.80 cubic meters per day and discharges a similar volume of treated wastewater. As a secondary treatment plant, Maravillas meets the basic requirements for municipal wastewater treatment in Mexico, where the official Mexican standards (NOM-001-SEMARNAT-1996 and subsequent updates) set discharge limits for pollutants. For small communities like Maravillas, secondary treatment is typically sufficient to protect local water quality, though additional nutrient removal may be needed in sensitive watersheds. The treated effluent from the plant is discharged into the local drainage system, which ultimately flows into the Papaloapan River basin, one of Mexico's major river systems. The Papaloapan River drains into the Gulf of Mexico near the city of Alvarado, supporting diverse aquatic ecosystems and coastal fisheries. The plant's operation helps reduce pollution loads in this important watershed.

The plant discharges into the Papaloapan River basin, which flows through the state of Veracruz and empties into the Gulf of Mexico. This watershed supports a variety of freshwater and estuarine habitats, including wetlands and mangrove forests near the coast.