Laguna Grande Wastewater Treatment Plant, Monte Escobedo, Zacatecas

Laguna Grande is a wastewater treatment plant located in the community of Laguna Grande, within the municipality of Monte Escobedo, Zacatecas, Mexico. The plant serves a population of 1,214 and provides secondary treatment, which is the standard biological treatment for organic matter removal. The plant has a designed capacity of 146.88 thousand m³/year and currently treats 114.91 thousand m³/year, indicating operational headroom. As a Mexican wastewater facility, Laguna Grande operates under the national water quality regulations enforced by CONAGUA (Comisión Nacional del Agua). Secondary treatment is appropriate for this small agglomeration, meeting the requirements for discharge into inland water bodies. The plant's performance is monitored through the national discharge permit system. The treated effluent from Laguna Grande ultimately drains into the local watershed within the Rio Grande de Santiago basin, which flows westward through Jalisco and into the Pacific Ocean. The plant plays a key role in protecting local water quality and downstream ecosystems in the semi-arid region of Zacatecas.

The plant discharges into the Rio Grande de Santiago basin, which drains through the states of Zacatecas and Jalisco before reaching the Pacific Ocean. This watershed supports diverse aquatic life and is important for regional agriculture and water supply. The secondary treatment helps reduce organic pollution and protect downstream water quality in this semi-arid region.