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Water, which is essential for human survival, relies on geological conditions, extraction, usage needs, and human activities, including domestic, commercial, industrial, mining, and agricultural practices. The Water Quality Index (WQI) assesses and grades the appropriateness of groundwater for utilization. Purpose of this investigation was to assess the quality of water used for household consumption and crop irrigation in Madurai. Eighty water samples were collected from various locations within a 3.5 km radius of Madurai's center. These parameters included pH, conductivity, Total Dissolved Solids (TDS), chloride (Cl−), Total Hardness (THS), calcium (Ca2+), magnesium (Mg2+), sodium (Na+), potassium (K+), and sulfate (SO4 2−). Tests were conducted to analyze the Water Quality Index. For irrigation assessment, several indicators were computed: sodium adsorption ratio (SAR), soluble sodium percentage (SSP), residual sodium carbonate (RSC), permeability index (PI), magnesium adsorption ratio (MAR), Kelley's ratio (KR), and sodium percentage (Na%). The Water Quality Index (WQI) classified water for human consumption into five categories: 8.75% as unsuitable, 15% as very poor, 43.75% as poor, 30% as good, and 2.5% as excellent. The results demonstrate the application of water quality indicators, aiding authorities in effective planning, treatment, and sustainable socioeconomic development.

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Determination of Ground Water Quality for Drinking and Irrigation Purposes in Madurai Using Water Quality Indices

  • 会议论文

  • 发表日期：

    2026年

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  • M. Deepak,
  • L. Andal,
  • G. Lallit Kishore

摘要

Water, which is essential for human survival, relies on geological conditions, extraction, usage needs, and human activities, including domestic, commercial, industrial, mining, and agricultural practices. The Water Quality Index (WQI) assesses and grades the appropriateness of groundwater for utilization. Purpose of this investigation was to assess the quality of water used for household consumption and crop irrigation in Madurai. Eighty water samples were collected from various locations within a 3.5 km radius of Madurai's center. These parameters included pH, conductivity, Total Dissolved Solids (TDS), chloride (Cl−), Total Hardness (THS), calcium (Ca2+), magnesium (Mg2+), sodium (Na+), potassium (K+), and sulfate (SO4 2−). Tests were conducted to analyze the Water Quality Index. For irrigation assessment, several indicators were computed: sodium adsorption ratio (SAR), soluble sodium percentage (SSP), residual sodium carbonate (RSC), permeability index (PI), magnesium adsorption ratio (MAR), Kelley's ratio (KR), and sodium percentage (Na%). The Water Quality Index (WQI) classified water for human consumption into five categories: 8.75% as unsuitable, 15% as very poor, 43.75% as poor, 30% as good, and 2.5% as excellent. The results demonstrate the application of water quality indicators, aiding authorities in effective planning, treatment, and sustainable socioeconomic development.