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. 2018 Oct 23;9:2519. doi: 10.3389/fmicb.2018.02519

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Copyright © 2018 Fish and Boxall.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Drinking Water Distribution System Test Facility in which biofilms were developed. (A) The three independent tanks (0.49 m³) and high density polyethylene (HDPE) loops of length 200 m and internal diameter of 79.3 mm, (B) The sections of each loop into which PWG coupons were inserted; M1–M3 indicate the location of the online chlorine meters, red circles highlight the location of flow meters used to control the hydraulics, and (C) Details of the PWG coupon dimensions. Figures are adapted from Fish et al. (2015, 2018).