# Groundwater Quality Index for Water Supply Production

Groundwater quality index for water supply production, GWQI, was employed as a simple mathematical tool to integrate the complex groundwater quality data into a numerical score. It would guide to select an appropriate water supply treatment process. It was thus necessary to develop such GWQI, which...

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Main Authors: , Article English 2013-07-01 EnvironmentAsia http://www.tshe.org/ea/pdf/vol6%20no2-3.pdf
id doaj-c9a0f277cafd4b399af443bde19c1067 Article doaj-c9a0f277cafd4b399af443bde19c10672020-11-24T21:21:56ZengThai Society of Higher Eduction Institutes on EnvironmentEnvironmentAsia1906-17142013-07-01621823Groundwater Quality Index for Water Supply ProductionWarangkana SungsitthisawadSomsak PitaksanuratGroundwater quality index for water supply production, GWQI, was employed as a simple mathematical tool to integrate the complex groundwater quality data into a numerical score. It would guide to select an appropriate water supply treatment process. It was thus necessary to develop such GWQI, which was the main objective of this study. We started searching for significant indicators by requesting 35 Thai experts to consider the importance of 32 water quality parameters through questionnaire based on the Delphi technique. These parameters were aggregated into 10 key parameters, reflecting the appropriate groundwater quality through the process of weighing factors. The most appropriate parameters were estimated from ten such parameters. By reduction of the ten parameters one by one, it was found that the GWQI(6i) was in high agreement with GWQI(10i) (Kappa coefficient = 0.765: 95%CI 0.700 to 0.828). The GWQI (6i) scores were confirmed by Ramesh´s tool with a high correlation (r = 0.768, 95% CI = 0.529 to 0.894, p-value = 0.001). Therefore, the GWQI(6i) could be used as the appropriate tool for groundwater quality assessment. Implementation of GWQI(6i) would save budget and time for analysis, and could provide a rapid water quality determination for the urgent situation.http://www.tshe.org/ea/pdf/vol6%20no2-3.pdfgroundwater quality index (GWQI)groundwater qualitywater supplyDelphi technique DOAJ English Article DOAJ Warangkana Sungsitthisawad Somsak Pitaksanurat Warangkana Sungsitthisawad Somsak Pitaksanurat Groundwater Quality Index for Water Supply Production EnvironmentAsia groundwater quality index (GWQI) groundwater quality water supply Delphi technique Warangkana Sungsitthisawad Somsak Pitaksanurat Warangkana Sungsitthisawad Groundwater Quality Index for Water Supply Production Groundwater Quality Index for Water Supply Production Groundwater Quality Index for Water Supply Production Groundwater Quality Index for Water Supply Production Groundwater Quality Index for Water Supply Production groundwater quality index for water supply production Thai Society of Higher Eduction Institutes on Environment EnvironmentAsia 1906-1714 2013-07-01 Groundwater quality index for water supply production, GWQI, was employed as a simple mathematical tool to integrate the complex groundwater quality data into a numerical score. It would guide to select an appropriate water supply treatment process. It was thus necessary to develop such GWQI, which was the main objective of this study. We started searching for significant indicators by requesting 35 Thai experts to consider the importance of 32 water quality parameters through questionnaire based on the Delphi technique. These parameters were aggregated into 10 key parameters, reflecting the appropriate groundwater quality through the process of weighing factors. The most appropriate parameters were estimated from ten such parameters. By reduction of the ten parameters one by one, it was found that the GWQI(6i) was in high agreement with GWQI(10i) (Kappa coefficient = 0.765: 95%CI 0.700 to 0.828). The GWQI (6i) scores were confirmed by Ramesh´s tool with a high correlation (r = 0.768, 95% CI = 0.529 to 0.894, p-value = 0.001). Therefore, the GWQI(6i) could be used as the appropriate tool for groundwater quality assessment. Implementation of GWQI(6i) would save budget and time for analysis, and could provide a rapid water quality determination for the urgent situation. groundwater quality index (GWQI) groundwater quality water supply Delphi technique http://www.tshe.org/ea/pdf/vol6%20no2-3.pdf AT warangkanasungsitthisawad groundwaterqualityindexforwatersupplyproduction AT somsakpitaksanurat groundwaterqualityindexforwatersupplyproduction 1725997354943774720