Beijing Engineering Research Center of Environmental Material for Water Purification;
College of Chemical Engineering;
Beijing University of Chemical Technology;
Beijing 100029;
China;
School of Environment;
Tsinghua University;
Beijing 100084;
China;
Research Institute for Environmental Innovation(Suzhou)Tsinghua;
Suzhou 215163;
China;
State Key Joint Laboratory of Environmental Simulation and Pollution Control;
College of Environmental Sciences and Engineering;
Peking University;
Beijing 100871;
China;
Drinking water distribution system; Molecular ecological network; Water source switch; UV-chlorine combined disinfection;