Tres Marias Wastewater Treatment Plant, Morelos, Mexico

Tres Marias is a municipal wastewater treatment plant located in the town of Tres Marias, Huitzilac municipality, Morelos, Mexico. The plant serves a small population of 1,004 residents and operates with secondary treatment, which is appropriate for communities of this scale in Mexico. The plant has a designed capacity of 432.00 cubic meters per day and currently treats 95.04 cubic meters daily. Under Mexican environmental regulations (NOM-001-SEMARNAT-1996 and subsequent updates), secondary treatment is the standard for municipal wastewater to reduce organic matter and suspended solids before discharge. The treated effluent from Tres Marias likely flows into local streams that drain into the Balsas River basin, one of Mexico's major hydrological systems. The Balsas River ultimately reaches the Pacific Ocean, supporting diverse aquatic ecosystems along its course. The plant's inland location reduces direct marine impact, but proper treatment remains important for downstream water quality.

Tres Marias is situated in the highlands of Morelos, within the Balsas River basin. The treated wastewater likely enters local tributaries that feed into the Balsas River, which flows southwest to the Pacific Ocean. This watershed supports agricultural activities and provides habitat for native fish species. The plant's secondary treatment helps protect downstream water quality in this ecologically sensitive region.