The qualified finished water from water treatment plants(WTPs)may become discolored and deteriorated during transportation in drinking water distribution systems(DWDSs),which affected tap water quality seriously.This water stability problem often occurs due to pipe corrosion and the destabilization of corrosion scales.This paper provides a com-prehensive review of pipe corrosion in DWDSs,including corrosion process,corrosion scale formation,influencing factors and monitoring technologies utilized in DWDSs.In terms of corrosion process,corrosion occurrence,development mechanisms,currently applied as-says,and indices used to determine the corrosion possibility are summarized,as well as the chemical and bacterial influences.In terms of scale formation,explanations for the na-ture of corrosion and scale formation mechanisms are discussed and its typical multilayered structure is illustrated.Furthermore,the influences of water quality and microbial activity on scale transformation are comprehensively discussed.Corrosion-related bacteria at the genus level and their associated corrosion mechanism are also summarized.This review helps deepen the current understanding of pipe corrosion and scale formation in DWDSs,providing guidance for water supply utilities to ensure effective measures to maintain water quality stability and guarantee drinking water safety.

State Key Joint Laboratory of Environmental Simulation and Pollution Control,School of Environment,Tsinghua University,Beijing 100084,China;State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,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

[1]Haiya Zhang;Dibo Liu;Lutong Zhao;Jun Wang;Shuguang Xie;Shuming Liu;Pengfei Lin;Xiaojian Zhang;Chao Chen-.Review on corrosion and corrosion scale formation upon unlined cast iron pipes in drinking water distribution systems)[J].环境科学学报（英文版）,2022(07):173-189

unlined,WTPs,discolored,DWDSs

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