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Inverse Distance Weighted Method and Environmental Health Risks of Plumbum Pollution in Drinking Water in Belawan Coastal Area

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Background: People who live in coastal areas are exposed to health risks due to the environmental pollution. The source of water for the community has also been polluted by Plumbum (Pb). This study aimed to measure the magnitude of environmental health risks on drinking water from bore wells and analyzed the patterns of Pb based on the distance of the waterfront and the depth of the bore wells. Method: This research was an analytic survey with a cross-sectional design. The methods used for analyzing the concentration of Plumbum was Atomic Absorption Spectrophotometer. Environmental health risks were measured by the Environmental Health Risks Assessment method and spacing and depth of bore wells in the spatial analysis employed IDW (Inverse Distance Weighted) method. The subjects were the community who used bore well around Belawan. Results: Only 34 respondents consumed Pb contaminated drinking water. The magnitude of the health risk (RQ) was <1, which means that the presence of Pb has not yet posed a risk. Spatial analysis found that the closer the well bore to the sea, the greater the risk (RQ), while the depth of the wells greatly varied. Conclusion: The health risks of Pb had not pose a high risk. The risk increased with proximity of the well bore to the sea front while the risk did not relate to the depth of the well.
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Keywords: Bore Well; Depth; Distance; Environmental Health Risk Assessment; Plumbum Pollution

Document Type: Research Article

Affiliations: 1: Natural Resource and Environmental Management, University of Sumatera Utara, 20155 and STIKES SUMUT, 20136, Indonesia 2: Department of Chemistry Engineering, Faculty of Engineering, University of Sumatera Utara, Medan, 20155, Indonesia 3: Department of Mathematics, Faculty of Mathematics and Natural Sciences, University of Sumatera Utara, Medan, 20155, Indonesia 4: Department of Public Health, Faculty of Public Health in University of Sumatera Utara, Medan, 20155, Indonesia

Publication date: April 1, 2017

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