Print Email Facebook Twitter An experimental study on the influence of water stagnation and temperature change on water quality in a full-scale domestic drinking water system Title An experimental study on the influence of water stagnation and temperature change on water quality in a full-scale domestic drinking water system Author Zlatanovic, L. (TU Delft Sanitary Engineering) van der Hoek, J.P. (TU Delft Sanitary Engineering; Waternet) Vreeburg, J.H.G. (Wageningen University & Research; KWR Water Research Institute) Date 2017 Abstract The drinking water quality changes during the transport through distribution systems. Domestic drinking water systems (DDWSs), which include the plumbing between the water meter and consumer's taps, are the most critical points in which water quality may be affected. In distribution networks, the drinking water temperature and water residence time are regarded as indicators of the drinking water quality. This paper describes an experimental research on the influence of stagnation time and temperature change on drinking water quality in a full-scale DDWS. Two sets of stagnation experiments, during winter and summer months, with various stagnation intervals (up to 168 h of stagnation) were carried out. Water and biofilms were sampled at two different taps, a kitchen and a shower tap. Results from this study indicate that temperature and water stagnation affect both chemical and microbial quality in DDWSs, whereas microbial parameters in stagnant water appear to be driven by the temperature of fresh water. Biofilm formed in the shower pipe contained more total and intact cells than the kitchen pipe biofilm. Alphaproteobacteria were found to dominate in the shower biofilm (78% of all Proteobacteria), while in the kitchen tap biofilm Alphaproteobacteria, Betaproteobacteria and Gammaproteobacteria were evenly distributed. To reference this document use: http://resolver.tudelft.nl/uuid:bbcd5175-2310-4d01-8d37-1d3c3341a09e DOI https://doi.org/10.1016/j.watres.2017.07.019 ISSN 0043-1354 Source Water Research, 123, 761–772 Part of collection Institutional Repository Document type journal article Rights © 2017 L. Zlatanovic, J.P. van der Hoek, J.H.G. Vreeburg Files PDF 1_s2.0_S0043135417305924_main.pdf 1.68 MB Close viewer /islandora/object/uuid:bbcd5175-2310-4d01-8d37-1d3c3341a09e/datastream/OBJ/view