Trieff, Norman2019-08-222019-08-222004-11-012014-03-31https://hdl.handle.net/20.500.12503/29437Rich-Sawka, Alisa. The Historical Analysis of the Ion Content of Water in the Washita Zone of Lake Texoma, Oklahoma, USA. Master of Public Health (Environmental and Occupational Science), November, 2004, pages, 7 tables, 6 figures, 30 references. The primary objective of this study was to analyze the conductivity and ionic content of water in the Washita River Zone of Lake Texoma, for the study period of 1996-1997. The ionic concentrations of calcium, sodium, chloride, sulfate and bromide were determined and then compared with conductivity with analysis of ratio of CI/Br, Na/CI, Na+C1)/TDS to validate the presence of anthropogenic source contamination from oil field brine after review of recommended values in the literature. A geologic review of the watershed was performed to confirm the underlying geologic formation was not a contributing factor. Due to a lack of consistent reliable data during the study period, a historical database was built and statistical analysis was performed confirming through bromide ratios a preexisting anthropogenic source contamination of the Washita River watershed.enChemicals and DrugsEnvironmental Health and ProtectionEnvironmental Indicators and Impact AssessmentEnvironmental MonitoringEnvironmental Public HealthEnvironmental SciencesEpidemiologyMedicine and Health SciencesOther Public HealthPhysical Sciences and MathematicsPublic HealthWater Resource ManagementIon contentwaterWashita ZoneLake TexomaOklahomahistorical analysisanthropogenic source contaminationoil field brineionic contentconductivitybromide ratiosThesis