Skip to Main content Skip to Navigation
Journal articles

Identification of Factors Affecting Bacterial Abundance and Community Structures in a Full-Scale Chlorinated Drinking Water Distribution System

Abstract : Abstract: Disentangling factors influencing suspended bacterial community structure across distribution system and building plumbing provides insight into microbial control strategies from source to tap. Water quality parameters (residence time, chlorine, and total cells) and bacterial community structure were investigated across a full-scale chlorinated drinking water distribution system. Sampling was conducted in treated water, in different areas of the distribution system and in hospital building plumbing. Bacterial community was evaluated using 16S rRNA gene sequencing. Bacterial community structure clearly differed between treated, distributed, and premise plumbing water samples. While Proteobacteria (60%), Planctomycetes (20%), and Bacteroidetes (10%) were the most abundant phyla in treated water, Proteobacteria largely dominated distribution system sites (98%) and taps (91%). Distributed and tap water differed in their Proteobacteria profile: Alphaproteobacteria was dominant in distributed water (92% vs. 65% in tap waters), whereas Betaproteobacteria was most abundant in tap water (18% vs. 2% in the distribution system). Finally, clustering of bacterial community profiles was largely explained by differences in chlorine residual concentration, total bacterial count, and water residence time. Residual disinfectant and hydraulic residence time were determinant factors of the community structure in main pipes and building plumbing, rather than treated water bacterial communities.
Document type :
Journal articles
Complete list of metadatas

Cited literature [55 references]  Display  Hide  Download

https://hal-riip.archives-ouvertes.fr/pasteur-02275231
Contributor : Michel Courcelles <>
Submitted on : Friday, August 30, 2019 - 3:43:49 PM
Last modification on : Wednesday, September 4, 2019 - 4:34:17 PM

File

Identification_of_factors_affe...
Publication funded by an institution

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Collections

Citation

Vanessa Dias, Audrey-Anne Durand, Philippe Constant, Michèle Prévost, Emilie Bédard. Identification of Factors Affecting Bacterial Abundance and Community Structures in a Full-Scale Chlorinated Drinking Water Distribution System. Water, MDPI, 2019, 11 (3), pp.627. ⟨10.3390/w11030627⟩. ⟨pasteur-02275231⟩

Share

Metrics

Record views

60

Files downloads

72