This system solves all water usage in hospital through the model of centralized purification and quality based water supply. The water purification system performs deep treatment on municipal tap water to meet the basic water quality standards for direct drinking water and direct use by various departments of hospital. Then, it is supplied to various departments through a full internal circulation pipe network and terminal filtration devices, covering water demand of the entire hospital.

Water sources in hospitals come from municipal tap water, so the indicators of raw water should comply with the "Sanitary Standards for Drinking Water". However, many departments in hospital require higher water quality to meet the requirements for practical use, and the differences in water quality indicators determine necessity of centralized purification with differentiated water supply.