Garden Expo direct drinking water uses the core technology of World Expo, using the combination process of "activated carbon +pvc ultrafiltration membrane + UV". Activated carbon can effectively remove small molecules of organic matter in water, reduce chroma and odor; PVC ultrafiltration membrane can completely remove suspended particles, bacteria, viruses, colloids and macromolecular organic matter in water, especially effective on the removal rate of bacteria; Uv has a strong bactericidal effect, can play a double protective role. The application of this technology in the World Expo shows that the water quality indexes of direct drinking water not only meet the requirements of the current national Sanitation Standards for Drinking Water (GB5749-2006) and the Water Quality Standards for Drinking Water (CJ94-2005), but also the main health indexes are even better than the European Union standards. Continuously and stably provide quality direct drinking water service for the park with an average daily flow of 8.3W people.