Evaluating Geologic Sources of Arsenic in Well Water in Virginia (USA)

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dc.contributor.authorVanDerwerker, Tiffanyen
dc.contributor.authorZhang, Linen
dc.contributor.authorLing, Erinen
dc.contributor.authorBenham, Brian L.en
dc.contributor.authorSchreiber, Madeline E.en
dc.contributor.departmentGeosciencesen
dc.coverage.countryUnited Statesen
dc.coverage.stateVirginiaen
dc.date.accessioned2018-04-25T17:17:34Zen
dc.date.available2018-04-25T17:17:34Zen
dc.date.issued2018-04-18en
dc.date.updated2018-04-25T15:19:02Zen
dc.description.abstractWe investigated if geologic factors are linked to elevated arsenic (As) concentrations above 5 μg/L in well water in the state of Virginia, USA. Using geologic unit data mapped within GIS and two datasets of measured As concentrations in well water (one from public wells, the other from private wells), we evaluated occurrences of elevated As (above 5 μg/L) based on geologic unit. We also constructed a logistic regression model to examine statistical relationships between elevated As and geologic units. Two geologic units, including Triassic-aged sedimentary rocks and Triassic-Jurassic intrusives of the Culpeper Basin in north-central Virginia, had higher occurrences of elevated As in well water than other geologic units in Virginia. Model results support these patterns, showing a higher probability for As occurrence above 5 μg/L in well water in these two units. Due to the lack of observations (<5%) having elevated As concentrations in our data set, our model cannot be used to predict As concentrations in other parts of the state. However, our results are useful for identifying areas of Virginia, defined by underlying geology, that are more likely to have elevated As concentrations in well water. Due to the ease of obtaining publicly available data and the accessibility of GIS, this study approach can be applied to other areas with existing datasets of As concentrations in well water and accessible data on geology.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationVanDerwerker, T.; Zhang, L.; Ling, E.; Benham, B.; Schreiber, M. Evaluating Geologic Sources of Arsenic in Well Water in Virginia (USA). Int. J. Environ. Res. Public Health 2018, 15, 787.en
dc.identifier.doihttps://doi.org/10.3390/ijerph15040787en
dc.identifier.orcidBenham, Brian [0000-0002-3041-8999]en
dc.identifier.orcidLing, Erin [0000-0002-7817-7979]en
dc.identifier.orcidSchreiber, Madeline [0000-0002-1858-7730]en
dc.identifier.urihttp://hdl.handle.net/10919/82915en
dc.language.isoenen
dc.publisherMDPIen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectgroundwater managementen
dc.subjectdrinking wateren
dc.subjectWater qualityen
dc.subjectstatistical modelingen
dc.subjectlogistic regressionen
dc.titleEvaluating Geologic Sources of Arsenic in Well Water in Virginia (USA)en
dc.title.serialInternational Journal of Environmental Research and Public Healthen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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