This professional practice guide is a basic reference on the quality of water used for reusable medical devices reprocessing (MDR) and flexible endoscopic devices reprocessing (EDR). It aims to support activity management, to standardize practices and to improve the quality of MDR. It is intended for all persons working in health care institutions who are directly or indirectly responsible for quality assurance in MDR, including managers, MDR institution respondents, MDR staff, and persons…