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Abstract <p>Groundwater, important for water supply, especially in dry and semi-dry areas, requires intensive quality evaluation to ensure permanent use. In the DJELFA region, the aquifer is an important source of drinking water and watering. The main objective of this study is to analyze the quality of the groundwater in this aquifer and to identify optimal quality areas for consumption and irrigation for humans and to map the spatial distribution of various physical chemical parameters in GIS. A total of 17 groundwater tests were analyzed for larger quotes and ions to calculate the Drinking Water Quality Index(DWQI) and Irrigation Water Quality Index (IWQI). The results of the DWQI indicated that most wells were classified as excellent, with only 2 classified as poor and very bad. Similarly, IWQI indicated that most wells were classified as excellent, while 4 were classified as good. These results emphasize the effectiveness of integrating GIS and water quality indices in the evaluation of groundwater quality. The visual distribution of different groundwater quality parameters provides valuable insight into different areas of groundwater quality that can help decision makers to be sufficient and plan to adapt to the use.</p>

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Assessing Groundwater Quality Using Water Quality Indices: a Case Study of the Djelfa Aquifer, Algeria

  • 期刊论文

  • 发表日期：

    2026年5月4日

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  • Sihem Hedjal,
  • Abdelwaheb Benamara,
  • Hamza Bouchehed,
  • Hamza Bouguerra,
  • Chemseddine Bouhadeb

摘要

Abstract

Groundwater, important for water supply, especially in dry and semi-dry areas, requires intensive quality evaluation to ensure permanent use. In the DJELFA region, the aquifer is an important source of drinking water and watering. The main objective of this study is to analyze the quality of the groundwater in this aquifer and to identify optimal quality areas for consumption and irrigation for humans and to map the spatial distribution of various physical chemical parameters in GIS. A total of 17 groundwater tests were analyzed for larger quotes and ions to calculate the Drinking Water Quality Index(DWQI) and Irrigation Water Quality Index (IWQI). The results of the DWQI indicated that most wells were classified as excellent, with only 2 classified as poor and very bad. Similarly, IWQI indicated that most wells were classified as excellent, while 4 were classified as good. These results emphasize the effectiveness of integrating GIS and water quality indices in the evaluation of groundwater quality. The visual distribution of different groundwater quality parameters provides valuable insight into different areas of groundwater quality that can help decision makers to be sufficient and plan to adapt to the use.