Microbial community dynamics of an urban drinking water distribution system subjected to phases of chloramination and chlorination treatments.

ABSTRACT: Water utilities in parts of the U.S. control microbial regrowth in drinking water distribution systems (DWDS) by alternating postdisinfection methods between chlorination and chloramination. To examine how this strategy influences drinking water microbial communities, an urban DWDS (population ≅ 40,000) with groundwater as the source water was studied for approximately 2 years. Water samples were collected at five locations in the network at different seasons and analyzed for their chemical and physical characteristics and for their microbial community composition and structure by examining the 16S rRNA gene via terminal restriction fragment length polymorphism and DNA pyrosequencing technology. Nonmetric multidimension scaling and canonical correspondence analysis of microbial community p

SUBMITTER: Hwang C 

PROVIDER: S-EPMC3485970 | biostudies-literature | 2012 Nov

REPOSITORIES: biostudies-literature