Francisco I Madero III Wastewater Treatment Plant, Francisco I. Madero (Puga), Nayarit

Francisco I Madero III is a wastewater treatment plant located in the community of Francisco I. Madero (Puga), within the municipality of Tepic, Nayarit, Mexico. The plant serves a small population of 1,825 residents, providing secondary treatment to municipal wastewater. The plant operates with a designed capacity of 345.60 cubic meters per day and currently discharges 172.80 cubic meters per day, indicating it is operating below its full capacity. As a secondary treatment facility, it meets the standard level of treatment required for municipal wastewater in Mexico under the national water quality regulations (NOM-001-SEMARNAT). The treated effluent is discharged into the local watershed, which ultimately drains into the Pacific Ocean via the Santiago River basin. The plant plays a role in protecting downstream water quality and aquatic ecosystems in the region.

The plant discharges into the Santiago River basin, which flows westward through Nayarit and empties into the Pacific Ocean near San Blas. This coastal watershed supports diverse aquatic life and is important for local fisheries. The secondary treatment provided by the plant helps reduce organic pollutants and suspended solids, contributing to the ecological health of the downstream environment.