Uzeta Wastewater Treatment Plant, Nayarit, Mexico

Uzeta wastewater treatment plant is located in the town of Uzeta, within the municipality of Ahuacatlán, Nayarit, Mexico. The facility serves a population of approximately 3,579 residents, providing secondary treatment to manage municipal wastewater. It is situated inland, more than 10 km from the coast, and operates as part of the region's sanitation infrastructure. The plant has a designed capacity of 604.80 cubic meters per day and currently treats a daily discharge volume of 475.20 cubic meters. As a secondary treatment facility, it employs biological processes to reduce organic matter and suspended solids before discharge. In Mexico, wastewater treatment plants are regulated under the Federal Law for Water and the Official Mexican Standards (NOMs), which set effluent quality limits for discharge into water bodies. The treated effluent is released into local waterways that drain into the Pacific Ocean via the Río Grande de Santiago and the Río Ameca basins. The surrounding region supports agricultural activities and diverse ecosystems. Proper treatment helps protect downstream water quality and aquatic habitats in the Nayarit area.

The plant discharges treated wastewater into local streams that flow into the Río Grande de Santiago, which eventually reaches the Pacific Ocean. This watershed supports agricultural irrigation and provides habitat for fish and other aquatic species. The region's tropical climate and seasonal rainfall influence water availability and treatment demands. Effective secondary treatment reduces nutrient and pathogen loads, helping to maintain the ecological balance of downstream water bodies and protect coastal areas from eutrophication.