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dc.contributor.authorStetzenbach, L. D.en_US
dc.contributor.authorYates, M. V.en_US
dc.contributor.authorGerba, Charles P.en_US
dc.contributor.authorSinclair, N. A.en_US
dc.date.accessioned2013-07-15T22:51:59Z
dc.date.available2013-07-15T22:51:59Z
dc.date.issued1984-04-07
dc.identifier.issn0272-6106
dc.identifier.urihttp://hdl.handle.net/10150/296111
dc.descriptionFrom the Proceedings of the 1984 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona-Nevada Academy of Science - April 7, 1984, Flagstaff, Arizonaen_US
dc.description.abstractGround water is an increasingly significant source of potable water that has traditionally been considered safe for human consumption without treatment. Although routinely monitored for the presence of coliforms, information concerning the non-coliform bacteria present in well water has been largely ignored. The purpose of this study was to demonstrate the ability of non-coliform, "naturally-occurring" bacteria to increase in number and persist in unamended well water. Water was collected from 19 continuously pumping wells throughout the Tucson basin and stored at in situ well water temperatures. Bacteria were enumerated using epifluorescent microscopy at predetermined intervals over a 30-day period. Greater than 3 log increases in bacterial numbers were noted after 24 hours of incubation. Maximum numbers were achieved after 3 days followed by a gradual decline ranging from 0.39-1.84 logs. Non-coliform, opportunistic pathogens have been isolated from Tucson well water. Their increase in number and survival in well water may impact the quality of untreated drinking water.
dc.language.isoen_USen_US
dc.publisherArizona-Nevada Academy of Scienceen_US
dc.rightsCopyright ©, where appropriate, is held by the author.
dc.subjectHydrology -- Arizona.en_US
dc.subjectWater resources development -- Arizona.en_US
dc.subjectHydrology -- Southwestern states.en_US
dc.subjectWater resources development -- Southwestern states.en_US
dc.titleThe Growth and Survival of "Naturally-Occurring" Bacteria in Well Wateren_US
dc.typetexten_US
dc.typeProceedingsen_US
dc.contributor.departmentDepartment of Microbiology and Immunology, University of Arizona, Tucson, Arizonaen_US
dc.identifier.journalHydrology and Water Resources in Arizona and the Southwesten_US
dc.description.collectioninformationThis article is part of the Hydrology and Water Resources in Arizona and the Southwest collections. Digital access to this material is made possible by the Arizona-Nevada Academy of Science and the University of Arizona Libraries. For more information about items in this collection, contact anashydrology@gmail.com.en_US
refterms.dateFOA2018-04-25T22:43:06Z
html.description.abstractGround water is an increasingly significant source of potable water that has traditionally been considered safe for human consumption without treatment. Although routinely monitored for the presence of coliforms, information concerning the non-coliform bacteria present in well water has been largely ignored. The purpose of this study was to demonstrate the ability of non-coliform, "naturally-occurring" bacteria to increase in number and persist in unamended well water. Water was collected from 19 continuously pumping wells throughout the Tucson basin and stored at in situ well water temperatures. Bacteria were enumerated using epifluorescent microscopy at predetermined intervals over a 30-day period. Greater than 3 log increases in bacterial numbers were noted after 24 hours of incubation. Maximum numbers were achieved after 3 days followed by a gradual decline ranging from 0.39-1.84 logs. Non-coliform, opportunistic pathogens have been isolated from Tucson well water. Their increase in number and survival in well water may impact the quality of untreated drinking water.


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