Access to clean fresh water is a fundamental welfare requirement for all livestock species, yet water access problems remain a significant welfare risk across farming systems.
Water is the single most important welfare input for livestock, yet water access problems are frequently identified during welfare inspections. Inadequate water provision causes rapid physiological deterioration, exacerbates heat stress, reduces feed conversion, and causes significant suffering. Common failure modes include insufficient trough capacity relative to group size, poor positioning creating access competition, fouling or freezing of water sources, and mechanical failures. Robust water provision systems with daily checking, backup provision, and adequate capacity for the largest demand period are essential minimum welfare requirements on all farms.