Drinking water quality and formation of biofilms in an office building during its first year of operation, a full scale study

Inkinen, Jenni; Kaunisto, Tuija; Pursiainen, Anna; Miettinen, Ilkka T.; Kusnetsov, Jaana; Riihinen, Kalle; Keinänen‐Toivola, Minna M.

doi:10.1016/j.watres.2013.11.013

Cited by 77 publications

(86 citation statements)

References 18 publications

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“…Biofilms were detached from the inner surfaces of the pipe collectors by shaking for three times 10 min with sterile 2‐mm glass beads followed by rinsing with 5 ml of sterile water (Inkinen et al . ). Water (2–4 l, depending on how much water could be filtered), resuspended biofilm samples (10 ml) and reagent blanks were filtered onto 0·2‐ μ m nylon membranes (N66, Ultipor ® ; Pall Corporation, Ann Arbor, MI), preserved with RNAlater (Qiagen, Hilden, Germany) and stored in −70°C to prevent nucleic acid degradation prior to extractions (Simister et al .…”

Section: Methodsmentioning

confidence: 97%

“…qPCR assays (gene copies per ml) reported earlier by Inkinen et al . () were available from a total of five biofilm samples that were sampled at the same time and locations, as in the present study. Furthermore, Legionell a culturing results obtained using ISO 11731 method (Inkinen et al .…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, Legionell a culturing results obtained using ISO 11731 method (Inkinen et al . ) were available from two of these biofilm samples. The numbers of 16S rDNA copies were measured using SybrGreenI qPCR assays with Quantifire Ltd. designed primers (Industrial Water ltd., Espoo, Finland) and ABI SDS 7000 (Applied Biosystems, Foster City, CA, USA).…”

Section: Methodsmentioning

confidence: 99%

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Diversity of ribosomal 16S DNA- and RNA-based bacterial community in an office building drinking water system

et al. 2016

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Section: Methodsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Diversity of ribosomal 16S DNA- and RNA-based bacterial community in an office building drinking water system

et al. 2016

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“…From a practical standpoint, premise plumbing is extremely complex and can differ greatly between buildings, including diverse fixture types and materials, pipe surface to volume ratios, and water temperatures (NRC, 2006). Flow conditions within pluming can also vary dramatically from one point to another depending on the building layout (Inkinen et al, 2014). All these factors result in heterogeneity within and between premise plumbing environments, making it difficult to identify common sampling plans that are representative of the actual contamination by OPPPs and risk for disease transmission.…”

Section: Introductionmentioning

confidence: 99%

Methodological approaches for monitoring opportunistic pathogens in premise plumbing: A review

et al. 2017

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Opportunistic pathogens inhabiting premise (i.e., building) plumbing (OPPPs, e.g., L. pneumophila, M. avium complex, P. aeruginosa, Acanthamoeba, and N. fowleri) are a significant and growing source of disease. Because OPPPs establish and grow as part of the native drinking water microbiota, they do not correspond to fecal indicators, presenting a significant challenge to common and effective monitoring strategies. Further, different OPPPs present distinct requirements for sampling, preservation, and analysis, creating a significant impediment to their parallel detection. The aim of this critical review is to synthesize the state of the science of monitoring OPPPs and to identify a path forward for their simultaneous detection and quantification in a manner commensurate with the need for reliable data to inform risk assessment and mitigation. Water and biofilm sampling procedures, as well as factors influencing sample representativeness and detection sensitivity, are critically evaluated with respect to the five representative bacterial and amoebal OPPPs noted above. Available culturing and molecular approaches are discussed in terms of their advantages, limitations, and applicability. Knowledge gaps and research needs are identified.

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“…In the decision making processes, the lack of understanding the importance of a properly working water system may lead to the lack of investments on the infrastructure (Ainsworth, 2004;OECD, 2013). Furthermore, technical properties of DWDSs such as the occurrence of dead-ends in the pipeline, piping materials, diameter of pipelines in relation to the water flow and the design of the pipelines have influence on the water quality (Inkinen et al, 2014;LeChevallier et al, 1996). Thus, the site-specific DWDS properties have to be considered when planning successful monitoring schemes.…”

Section: Introductionmentioning

confidence: 99%

Drinking Water Quality in Distribution Systems of Surface and Ground Waterworks in Finland

Ikonen¹,

Hokajärvi²,

Heikkinen³

et al. 2017

Journal of Water Security

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Abstract. Physico-chemical and microbiological water quality in the drinking water distribution systems (DWDSs) of five waterworks in Finland with different raw water sources and treatment processes was explored. Water quality was monitored during four seasons with on-line equipment and bulk water samples were analysed in laboratory. Seasonal changes in the water quality were more evident in DWDSs of surface waterworks compared to the ground waterworks and artificially recharging ground waterworks (AGR). Between seasons, temperature changed significantly in every system but pH and EC changed only in one AGR system. Seasonal change was seen also in the absorbance values of all systems. The concentration of microbially available phosphorus (MAP, μg PO₄-P/l) was the highest in drinking water originating from the waterworks supplying groundwater. Total assimilable organic carbon (AOC, μg AOC-C/l) concentrations were significantly different between the DWDSs other than between the two AGR systems. This study reports differences in the water quality between surface and ground waterworks using a wide set of parameters commonly used for monitoring. The results confirm that every distribution system is unique, and the water quality is affected by environmental factors, raw water source, treatment methods and disinfection.

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Drinking water quality and formation of biofilms in an office building during its first year of operation, a full scale study

Cited by 77 publications

References 18 publications

Diversity of ribosomal 16S DNA- and RNA-based bacterial community in an office building drinking water system

Diversity of ribosomal 16S DNA- and RNA-based bacterial community in an office building drinking water system

Methodological approaches for monitoring opportunistic pathogens in premise plumbing: A review

Drinking Water Quality in Distribution Systems of Surface and Ground Waterworks in Finland

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