New Mexico’s Oil Conservation Division passed a rule obligating oil & gas operators to provide monthly data on water consumed in hydraulic fracturing operations as well as the water’s characteristics. The rule establishes four categories for water: oil & gas produced water, not produced water (more than 10,000 mg/l TDS), not produced water (1,000-10,000 mg/l TDS – brackish water), and not produced water (less than 1,000 mg/l TDS – freshwater).