La Piña Wastewater Treatment Plant, Paso del Macho, Veracruz

La Piña is a municipal wastewater treatment plant located in Paso del Macho, Veracruz, Mexico. It serves a population of 1,734 and operates with secondary treatment, a standard for communities of this size in Mexico. The plant is situated inland, approximately 50 km from the Gulf Coast, and is part of the state's water infrastructure managed under Mexican environmental regulations. The plant has a designed capacity of 164.16 cubic meters per day, matching its current discharge volume, indicating full utilization. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. As a small-scale facility, it falls under Mexico's national water quality standards (NOM-001-SEMARNAT), which set discharge limits for pollutants to protect receiving waters. The treated effluent is discharged into local streams that eventually drain into the Gulf of Mexico. The region's watershed supports diverse aquatic life and agricultural activities. Proper treatment helps prevent eutrophication and protects downstream ecosystems, including coastal areas near the Gulf.

The plant discharges into local waterways that flow toward the Gulf of Mexico, part of the larger Papaloapan River basin. This region supports diverse aquatic habitats and is important for local fisheries and agriculture. Effective secondary treatment reduces nutrient and organic loads, helping to maintain water quality in downstream coastal zones.