Sterile processing department (SPD) technicians are responsible for providing properly reprocessed surgical instruments for procedures. They use utility (ie, tap) water for precleaning, cleaning, and disinfection; and critical (ie, treated to remove impurities) water for the final rinse and steam sterilization. Water maintenance personnel should work with SPD personnel to ensure that the facility's water supply meets the quality parameters for hardness, pH, conductivity, chlorides, bacteria, and endotoxins. Inadequate water quality and quantity can affect SPD technicians' ability to reprocess instruments correctly and may result in pathogen transmission. When water quality concerns arise, SPD personnel should notify perioperative personnel. Health care facilities should have a water management program to address both normal and abnormal water operations and an emergency water supply plan. Pandemics, geopolitical conflicts, and natural disasters may disrupt water supplies. Proactive planning for water shortages should help facility leaders respond quickly and effectively when shortages occur.