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Groundwater is prone to pollution, especially in areas with widespread land use for various purposes, particularly mining. With a complex volcano-sedimentary depositional sequence and ongoing mining activity in the study area, there is great potential for dynamic change in water quality and spatial distribution. Hence an attempt has been made to conduct a comprehensive hydrogeochemical evaluation in and around Mangampeta Barytes Mine using water quality index (WQI), pollution index of groundwater (PIG) and geospatial technology (GST). A 10 km buffer zone around the mine was selected to perform the present study, comprising 314 km2. Thirty-one representative groundwater samples have been obtained and examined for major cations, anions, and other physico-chemical variables like pH, Electrical conductivity (EC), Total dissolved solids (TDS), Total Alkalinity (TA), and Total hardness (TH). The analytical findings show that the groundwater is alkaline and has high EC and TDS values above WHO-permissible limits. Low Calcium and Magnesium values of the samples indicate the study region belongs to a non-carbonaceous source, with a few outliers from the mine area. According to spatial distribution maps, the sample sites 23, 24, 27, 30, and 31 exhibit significant concentrations of sulfates, magnesium, and electric conductivity, which are falling in the runoff catchment areas of mine dump yards (shale/tuff with pyrites), as well as pulverising mills. PIG findings show 10%, 61%, 19%, 6% and of groundwater samples have extremely high pollution, high pollution, moderate pollution, and low pollution categories, respectively. They are thus unfit for human use, with only 3% Insignificant pollution category which can be used for human usage. In contrast, the WQI concern, 48.28%, 32.26%, and 19.36% of groundwater samples fall into the excellent, good, and poor categories, respectively. HCA, PIG and WQI, indicates that the samples taken in and near mining areas have significant contamination levels. These findings will aid policymakers in putting appropriate corrective measures in place to reduce contamination in the affected areas.

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Application of Water Quality Index, Hierarchical Cluster Analysis, Pollution Index of Groundwater and Geospatial Technologies in Evaluating the Water Quality: A Study from Mangampeta Barytes Mine Area, South India

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  • 发表日期：

    2025年

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  • Mannala Prasad,
  • Vangala Sunitha,
  • Etikala Balaji,
  • Bandi Muralidhara Reddy,
  • Yenugu Sudharshan Reddy,
  • Badapalli Pradeep Kumar

摘要

Groundwater is prone to pollution, especially in areas with widespread land use for various purposes, particularly mining. With a complex volcano-sedimentary depositional sequence and ongoing mining activity in the study area, there is great potential for dynamic change in water quality and spatial distribution. Hence an attempt has been made to conduct a comprehensive hydrogeochemical evaluation in and around Mangampeta Barytes Mine using water quality index (WQI), pollution index of groundwater (PIG) and geospatial technology (GST). A 10 km buffer zone around the mine was selected to perform the present study, comprising 314 km2. Thirty-one representative groundwater samples have been obtained and examined for major cations, anions, and other physico-chemical variables like pH, Electrical conductivity (EC), Total dissolved solids (TDS), Total Alkalinity (TA), and Total hardness (TH). The analytical findings show that the groundwater is alkaline and has high EC and TDS values above WHO-permissible limits. Low Calcium and Magnesium values of the samples indicate the study region belongs to a non-carbonaceous source, with a few outliers from the mine area. According to spatial distribution maps, the sample sites 23, 24, 27, 30, and 31 exhibit significant concentrations of sulfates, magnesium, and electric conductivity, which are falling in the runoff catchment areas of mine dump yards (shale/tuff with pyrites), as well as pulverising mills. PIG findings show 10%, 61%, 19%, 6% and of groundwater samples have extremely high pollution, high pollution, moderate pollution, and low pollution categories, respectively. They are thus unfit for human use, with only 3% Insignificant pollution category which can be used for human usage. In contrast, the WQI concern, 48.28%, 32.26%, and 19.36% of groundwater samples fall into the excellent, good, and poor categories, respectively. HCA, PIG and WQI, indicates that the samples taken in and near mining areas have significant contamination levels. These findings will aid policymakers in putting appropriate corrective measures in place to reduce contamination in the affected areas.