Based on 2018 national drinking water quality data, IPE developed the national drinking water source water quality map. The overall compliance rate of drinking water sources in the country is relatively high. The index found that the 14 cities with the worst water quality are all in the north; the monitoring results of more than 100 drinking water sources published since 2018 demonstrate pollution over the standard; and the toxicology indicators of 69 sources demonstrate pollution over the standard. In recent years, efforts to rectify environmental problems and protect these water sources have strengthened. However, it is necessary to safeguard against a pollution rebound at the same time as water source remediation.