中华预防医学会环境卫生分会于１９９９年８月２３日至２６日在杭州召开了饮水深度净化卫生研讨会，高等院校、科研院所、卫生防疫机构、生产企业的代表共１２２人出席了会议。会议由分会主任委员董善亨主任医师主持，卫生部、浙江省卫生厅、浙江省卫生防疫站领导同志出席开幕 China Preventive Medical Association Environmental Health Branch held a seminar on drinking water purification in Hangzhou from August 23 to August 26, 1999. A total of 122 representatives from institutions of higher learning, research institutes, health and epidemic prevention agencies, and manufacturing enterprises attended the conference . The meeting was chaired by director Dong Shanheng, director of the branch, and leaders from Zhejiang Provincial Health Department and Zhejiang Provincial Health and Epidemic Prevention Station attended the opening ceremony