Groundwater contamination analysis using Fuzzy Water Quality index (FWQI): Yazd province, Iran

Authors

  • Amir Saberi Nasr Faculty of Earth Science, Kharazmi University, Tehran, Iran
  • Majid Dashti Barmaki Faculty of Earth Science, Kharazmi University, Tehran, Iran
  • Mohsen Rezaei Faculty of Earth Science, Kharazmi University, Tehran, Iran
Abstract:

Fuzzy Water Quality Index (FWQI) was applied in order to assess the degree of drinking water resources in Yazd province, Iran. Thisstudy has also offered the creation of a new fuzzy water quality index (FWQI) to evaluate this tool’s applicability. 12 chemicalparameters including toxic and non-toxic heavy metals measured in 71 groundwater samples collected from drinking water resourcesin rural areas were used. In FWQI, input data are categorized into three linguistic terms (“Desirable” or “Low”, “Acceptable” or“Medium” and “Not-acceptable” or “High”) based on water quality standards for drinking water, Whereas the output data arecategorized into five classes (“Poor”, “Fair”, “Medium”, “Good” and “Excellent”) based on water quality index (WQI). The resultsshow that 8 groundwater samples were classified in the “Excellent” class with a certainty level of 5.33-76.67%, 41 samples in the“Good” group with a certainty level of 8.5-96.5%, 8 samples were in the “Medium” category with a certainty level of 14-93.5%, 1sample in the “Fair” level with a certainty level of 36.5%, and 13 samples were classified in the “Poor” class with a certainty level of54.8-81.5% for potable purposes. The proposed Index can be a useful tool to be used in decision-making and environmental.

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Journal title

volume 3  issue 1

pages  47- 55

publication date 2013-06-01

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