On March 11, 2022, the Official Mexican Standard titled NOM-001-SEMARNAT-2021 was published (“NOM” per its acronym in Spanish) setting forth new limits allowed for wastewater discharges to federal waterways. Such NOM updates and replaces Official Mexican Standard NOM-001-SEMARNAT-1996, and will enter into force in stages.
Regarding the NOM’s specifics, the following are worth noting:
1.