This study aimed to investigate bacterial community in an urban drinking water distribution system(DWDS)during an occurrence of colored water.Variation in the bacterial community diversity and structure was observed among the different waters,with the predominance of Proteobacteria.While Verrucomicrobia was also a major phylum group in colored water.Limnobacter was the major genus This study aimed to investigate bacterial community in an urban drinking water distribution system (DWDS) during an occurrence of colored water. Variation in the bacterial community diversity and structure was observed among the different waters, with the predominance of Proteobacteria. Still Verrucomicrobia was also a major phylum group in colored water .Limnobacter was the major genus