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Grab samples were taken at hand washing sinks, water fountains, and hose bibbs before and after flushing. Samples were analyzed for free chlorine, UVA254, copper, lead, total trihalomethanes, pH, conductivity, temperature, and <jats:italic>Legionella<\/jats:italic> species. All three schools experienced an increase in free chlorine post\u2010flush. Copper concentrations were higher for first draw samples than post\u2010flush samples for all schools. Conductivity, temperature, and pH did not see a major change after flushing. UVA254 values decreased after flushing. Bromoform species saw a 20% increase after flushing at the elementary school. <jats:italic>Legionella<\/jats:italic> spp. did not decrease post\u2010flush at the elementary school. Overall, flushing changed the water quality at the schools. However, equipment flushing may be necessary to fully remediate <jats:italic>Legionella<\/jats:italic> spp.<\/jats:p><\/jats:sec><jats:sec><jats:title>Article Impact Statement<\/jats:title><jats:p>Prolonged closure of buildings causes water quality issues such as lack of disinfectant and <jats:italic>Legionella<\/jats:italic>. Flushing can restore water quality.<\/jats:p><\/jats:sec>","DOI":"10.1002\/aws2.1239","type":"journal-article","created":{"date-parts":[[2021,9,3]],"date-time":"2021-09-03T04:36:03Z","timestamp":1630643763000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Pre\u2010 and post\u2010flushing of three schools in Arizona due to <scp>COVID<\/scp>\u201019 shutdown"],"prefix":"10.1002","volume":"3","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3739-2998","authenticated-orcid":false,"given":"Rain","family":"Richard","sequence":"first","affiliation":[{"name":"School of Sustainable Engineering and the Built Environment (SSEBE) Arizona State University  Tempe Arizona USA"},{"name":"Biodesign Swette Center for Environmental Biotechnology Arizona State University  Tempe Arizona USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0818-5604","authenticated-orcid":false,"given":"Treavor H.","family":"Boyer","sequence":"additional","affiliation":[{"name":"School of Sustainable Engineering and the Built Environment (SSEBE) Arizona State University  Tempe Arizona USA"},{"name":"Biodesign Swette Center for Environmental Biotechnology Arizona State University  Tempe Arizona USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,9,2]]},"reference":[{"key":"e_1_2_9_2_1","unstructured":"AWWA(2020). 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