Mr Ma (back row, third left), Dr Chan (back row, fourth left), the Chairperson of the Working Group on Public Education of ACRQWS, Ms Nicole Wong (back row, centre), the Chairperson of the Working Group on Quality of Water in Buildings of ACRQWS, Mr Ivan Lau (back row, fourth right) and the Chairperson of the Working Group on Publication of Water Quality Data of ACRQWS, Dr Richard Cheung (back row, third right) pictured with the Water Conservation Ambassadors.   Close