The objective was to determine the productivity (P) and efficiency (E) of water (A) used in bovine milk production, both in physical (F), economic (E) and social (S) terms in the Rural Development District (RDD) Laguna-Coahuila, Mexico in low (LRV) and high yielding (HRV) dairy herds, using an economic methodology based on the use of mathematical equations fed with commercial scale data. The results, for both types of producing wombs, in the same...