Browsing NTNU Open by Author "Waak, Michael B"
Now showing items 1-5 of 5
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The benefits of flushing for mitigating Legionella spp. in non-chlorinated building plumbing systems
Meegoda Kankanamge Don, Charuka Saamantha Meegoda; Waak, Michael B; Hozalski, Raymond M.; Kim, Taegyu; Hallé, Cynthia (Peer reviewed; Journal article, 2023)Flushing is a common corrective action recommended by Legionella management guidelines to remove stagnant water and replenish disinfectant. Due to water age and different local regulations, buildings may receive water with ... -
Comparison of the microbiomes of two drinking water distribution systems—with and without residual chloramine disinfection
Waak, Michael B; Hozalski, Raymond M; Halle, Cynthia; LaPara, Timothy M (Journal article; Peer reviewed, 2019)Background Residual disinfection is often used to suppress biological growth in drinking water distribution systems (DWDSs), but not without undesirable side effects. In this study, water-main biofilms, drinking water, ... -
Demonstrating the potential of salt tracer studies to improve Norwegian drinking water network models and water age estimates
Rakstang, Jon Kristian; Waak, Michael B; Rokstad, Marius Møller; Halle, Cynthia (Peer reviewed; Journal article, 2021)«Tracer»-studier med salt kan potensielt forbedre norske vannettsmodeller og vannalder-estimater. Hygienisk sikkert drikkevann er et grunnleggende menneskelig behov. Drikkevannskvalitet påvirkes av råvannet, vannbehandling, ... -
Flushing of Stagnant Premise Water Systems after the COVID-19 Shutdown Can Reduce Infection Risk by Legionella and Mycobacterium spp.
Hozalski, Raymond M; LaPara, Timothy M; Zhao, Xiaotian; Kim, Taegyu; Waak, Michael B; Burch, Tucker; McCarty, Michael (Peer reviewed; Journal article, 2020)There is concern about potential exposure to opportunistic pathogens when reopening buildings closed due to the COVID-19 pandemic. In this study, water samples were collected before, during, and after flushing showers in ... -
Variation of Legionella spp. with Lake Depth and Season in Two Norwegian Drinking Water Sources
Meegoda, Charuka Saamantha; Waak, Michael B; Kim, Taegyu; Hozalski, Raymond M; Halle, Cynthia (Journal article; Peer reviewed, 2022)