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Issue 7, 2020
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Microbiological water quality in a decentralized Arctic drinking water system

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Abstract

Drinking water samples were collected from the water source, water delivery truck, domestic water storage tanks, and at the point of use in a decentralized drinking water system in Pond Inlet, Nunavut, a predominantly Inuit community in Canada's Arctic region. The samples were analyzed for standard water quality parameters (turbidity, colour, pH, conductivity), biological water quality parameters (coliforms, adenosine triphosphate), and free and total chlorine. The microbial communities in a subset of water and biofilm samples were characterized with DNA analysis. Physiochemical characteristics at the tap were influenced by source water quality and building-specific conditions. Multiple aesthetic water quality parameters were above recommended values including turbidity and colour. Turbidity and biological activity (measured as cellular ATP) varied temporally in some locations. DNA analysis at the phylum, family, and genus level demonstrated that microbial ecology evolved from source water to tap and that individual storage tanks and taps were influenced by distinct microbial communities.

Graphical abstract: Microbiological water quality in a decentralized Arctic drinking water system

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Supplementary files

Article information


Submitted
09 Jan 2020
Accepted
22 May 2020
First published
28 May 2020

This article is Open Access

Environ. Sci.: Water Res. Technol., 2020,6, 1855-1868
Article type
Paper

Microbiological water quality in a decentralized Arctic drinking water system

S. L. Gora, T. Anaviapik Soucie, N. E. McCormick, C. C. Ontiveros, V. L'Hérault, M. Gavin, B. F. Trueman, J. Campbell, A. K. Stoddart and G. A. Gagnon, Environ. Sci.: Water Res. Technol., 2020, 6, 1855
DOI: 10.1039/D0EW00019A

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