Web GIS for Well-Water Contaminants Henry Duran | Mark Kumler, PhD | Geographic Information Science | University of Redlands Problem The Environmental Health Services (EHS) division of the San Bernardino County Department of Public Health lacks a tool for conveying comprehensive water well information to San Bernardino County residents. EHS has a quick look-up table of paper documents that only shows general information of cities with elevated levels of certain well-water contaminants. Therefore, the available information is deficient and not presented effectively to groundwater well consumers, a fact that compromises users’ health by putting them in an at-risk position since well water may contain dangerous toxic substances.
Data gathering
Geodatabase design
Upload/Update file geodatabase to ArcGIS Online
Solution Develop a cloud-based system application to visualize comprehensive locationbased data and metrics about well-water contaminants such as Arsenic, Chromium VI, Fluoride, Nitrate, Perchlorate, and Uranium across San Bernardino county. A GIS
solution can intuitively visualize comprehensive geographic data and metrics about Change format and filter the six contaminants
well-water contaminants through interactive web maps and metrics dashboard. The Classification of concentration levels
Web Application
solution was developed in ArcGIS Online and ArcGIS Pro in order to meet the client’s needs and requirements accordingly.
Classification of Concentration Levels This phase classifies three different concentration levels for contaminants by using established standards for public water systems of the National Primary Drinking Water Regulations (NPDWR), such as the maximum contaminant level (MCL).
Results This panel allows users to find information about the number of water tests conducted in their interest area from 1912 to 2020, by either filtering their communities on the community list or selecting by area through the tools on the web map. By clicking on each water well location, data can be found such as Well ID, test result, chemical, concentration levels, and more. In addition, information about the average percentage of MCL results per year and for contaminant is available for users. As a result, the web application can provide situational awareness to users, so they can make informed decisions when either consuming groundwater or drilling new wells at their properties.
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