Abstract The main objectives of the study are: (i) to evaluate the overall groundwater quality around the marble dumping sites in Kishangarh, Rajasthan, (ii) to assess the geochemical attributes of the water quality parameters with a focus on fluoride (F-) contamination, and (iii) to evaluate the potential anthropogenic impacts on groundwater quality. To achieve the objectives, groundwater samples are collected from the Kishangarh area. The water samples are analysed for different water quality parameters, and geochemical analysis is done to assess the major attributes. Spatial distribution of water quality parameters and land use patterns provide insight into the possible impact of dumping sites. The outcome of the study shows that the groundwater quality in the Kishangarh region is of poor quality, where up to 95% of samples contain high total dissolved solids (TDS) (average: 1756±893 mg/L), hardness (average: 883±701 mg/L eq. CaCO3), and alkalinity (average: 440±222 mg/L eq. CaCO3) that exceed the permissible limit for drinking water (BIS 10500:2012). The F- concentration of around 64% of samples lies above the permissible limit. Silicate weathering is likely to dominate the geochemical attributes that result in moderate to high levels of TDS in the regional groundwater. The F- contamination in groundwater is identified to be attributed mainly to dissolution of F- bearing mineral, which is favoured under alkaline conditions. TDS and hardness are higher in the groundwater located near the marble dump yard. In brief, it could be concluded that the poor groundwater quality in the Kishangarh area is mainly attributed to natural geoformation and regional hydrogeochemical conditions. However, the anthropogenic activities, including the disposal of marble slurry in unlined landfills, also impacted the groundwater quality on a localized scale. Research highlights <UnorderedList Mark="Bullet"> <ItemContent> Poor groundwater quality with high TDS, hardness, alkalinity, and F- in Kishangarh. </ItemContent> <ItemContent> F- concentration is mainly attributed to silicate weathering and base ion exchange. </ItemContent> <ItemContent> Elevated groundwater TDS, hardness and aluminium around marble dumping site. </ItemContent> <ItemContent> Alkalinity and F- concentrations are comparatively less around dumping site. </ItemContent> </UnorderedList>

Assessment of groundwater quality around marble slurry dumping sites at Kishangarh in Rajasthan: evaluation of possible anthropogenic impacts

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发表日期：

2026年3月6日

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Vijesh Prajapat,
Traugott Scheytt,
Trishikhi Raychoudhury

摘要

Abstract

The main objectives of the study are: (i) to evaluate the overall groundwater quality around the marble dumping sites in Kishangarh, Rajasthan, (ii) to assess the geochemical attributes of the water quality parameters with a focus on fluoride (F^-) contamination, and (iii) to evaluate the potential anthropogenic impacts on groundwater quality. To achieve the objectives, groundwater samples are collected from the Kishangarh area. The water samples are analysed for different water quality parameters, and geochemical analysis is done to assess the major attributes. Spatial distribution of water quality parameters and land use patterns provide insight into the possible impact of dumping sites. The outcome of the study shows that the groundwater quality in the Kishangarh region is of poor quality, where up to 95% of samples contain high total dissolved solids (TDS) (average: 1756±893 mg/L), hardness (average: 883±701 mg/L eq. CaCO₃), and alkalinity (average: 440±222 mg/L eq. CaCO₃) that exceed the permissible limit for drinking water (BIS 10500:2012). The F^- concentration of around 64% of samples lies above the permissible limit. Silicate weathering is likely to dominate the geochemical attributes that result in moderate to high levels of TDS in the regional groundwater. The F^- contamination in groundwater is identified to be attributed mainly to dissolution of F^- bearing mineral, which is favoured under alkaline conditions. TDS and hardness are higher in the groundwater located near the marble dump yard. In brief, it could be concluded that the poor groundwater quality in the Kishangarh area is mainly attributed to natural geoformation and regional hydrogeochemical conditions. However, the anthropogenic activities, including the disposal of marble slurry in unlined landfills, also impacted the groundwater quality on a localized scale.

Research highlights

Poor groundwater quality with high TDS, hardness, alkalinity, and F^- in Kishangarh.

F^- concentration is mainly attributed to silicate weathering and base ion exchange.

Elevated groundwater TDS, hardness and aluminium around marble dumping site.

Alkalinity and F^- concentrations are comparatively less around dumping site.