Rainfall and microbial contamination in Alberta well water

dc.contributor.authorValeo, Caterina
dc.contributor.authorHe, Jianxun
dc.contributor.authorCheckley, Sylvia
dc.contributor.authorNeumann, Norman
dc.date.accessioned2017-11-23T22:23:09Z
dc.date.available2017-11-23T22:23:09Z
dc.date.copyright2016en_US
dc.date.issued2016-07-15
dc.description.abstractSpatial and seasonal patterns in the positive rates of total coliforms and Escherichia coli in Alberta well water were investigated to gain insight into well water microbial contamination. Analysis was conducted in the presence of total coliforms (77  135 tests) and E. coli (77  132 tests) in well water from 2004 to 2009 along with monthly estimates of precipitation, all of which were aggregated to 13 zones across Alberta by using Voronoi tessellation. Regression combined with autocorrelation analysis was employed to develop wave functions for data assembled in each zone. Precipitation was found to peak in June or July in all 13 regions. The positive E. coli rate was found to peak in June, July or August, but the positive total coliform rate peaked in August, September or October. Spatial statistical analysis revealed a potential association of total coliforms and E. coli with precipitation in two heavily populated basins. Spatial density analysis revealed a cluster of positive tests of total coliforms and E. coli in a narrow spatial extent in June and July of 2005.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.identifier.citationValeo, Caterina, He, Jianxun, Checkley, Sylvia, & Neumann, Norman, "Rainfall and microbial contamination in Alberta well water",Journal of Environmental Engineering and Science, 2016, 11(1), 18–28en_US
dc.identifier.urihttp://dx.doi.org/10.1680/jenes.15.00022
dc.identifier.urihttp://hdl.handle.net/1828/8810
dc.language.isoenen_US
dc.publisherInstitution of Civil Engineers (ICE)en_US
dc.subjectgroundwater
dc.subjecthealth & safety
dc.subjecthydrology & water resource
dc.subject.departmentDepartment of Mechanical Engineering
dc.titleRainfall and microbial contamination in Alberta well wateren_US
dc.typeArticleen_US

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