To promote the intensive utilization of water resources and facilitate the sustainable development of harmonious human-water relationship, the characteristics of quality-divided water supply in China were analyzed through literature research and engineering investigation. The existing water supply quality standards and policies in different industries were systematically reviewed. The application status of quality-divided water supply in China was analyzed from the aspects of high-quality water use such as drinking water and special industrial water use, as well as low-quality water use such as industrial water and municipal miscellaneous water. It was found that during the practices of quality-divided water supply, there were problems such as pipeline misconnection, low water supply quality guarantee rate, difficulty in unifying user acceptance, and uneven regional economic conditions and technical development levels, which made it difficult to popularize quality-divided water supply. Based on this, countermeasures and suggestions such as accelerating the introduction of policies, strengthening technological research and development, and increasing popular science publicity were put forward.