Spatial distribution of groundwater quality with special emphasis on fluoride of Mandvi Taluka, Surat, Gujarat, India

Prajapati, Mayuri; Jariwala, Namrata; Agnihotri, P. G.

doi:10.1007/s13201-017-0636-z

Cited by 18 publications

(4 citation statements)

References 14 publications

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“…to study the occurrence of groundwater F levels and related health issues. 16,17 The present study aims to provide a more accurate view of the groundwater issue in Sri Lanka. The study aims to identify both hazardous and safe groundwater sources, and suggest feasible and economically viable solutions that can be implemented at the community level to mitigate dental fluorosis in Sri Lanka.…”

Section: Geographic Information System (Gis) Has Been Used Previouslymentioning

confidence: 99%

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The heterogeneous nature of water well fluoride levels in Sri Lanka: An opportunity to mitigate the dental fluorosis

Ranasinghe

Kruger

Chandrajith

et al. 2019

Comm Dent Oral Epid

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Objectives The study aimed to use Geographic Information Systems (GIS) to investigate the spatial distribution of the concentration of fluoride (F) in groundwater resources of Sri Lanka, and the geographic accessibility to an alternative water source having a low or safe F limit to mitigate dental fluorosis. Methods The study used randomly collected (6107) groundwater samples from Sri Lanka and categorized them as “dentally optimal” and “unsafe” based on their F content. The minimum distance from an identified high F source (above dentally optimal level) to a safe groundwater source was determined using geospatial analysis. Results Dentally optimal F sources (<1 and <1.5 mg/L) were identified among the high F groundwater sources (>2 mg/L), some even within a walking distance of 500 m. Results indicated that 26% of dentally unsafe groundwater sources (2.0 mg/L+ wells) had a low F source (<1.0 mg/L) available within a distance of 500 m. It was also evident that 39% of high F wells (2.0 mg/L+ wells) had a low F well (<1.5 mg/L) within a distance of 500 m, if the WHO guideline value for optimal F levels (1.5 mg/L) was assigned as the safe F limit. Conclusion The spatial approach demonstrated a reasonable access to alternative water sources with low or safe F limit in endemic fluorosis areas. Optimizing the use of accessible low F sources is highly recommended as the first‐line option to mitigate dental fluorosis in Sri Lanka since the defluoridation methods introduced in past did not provide sustainable oral health solutions for the inhabitants in high‐risk areas.

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Section: Geographic Information System (Gis) Has Been Used Previouslymentioning

confidence: 99%

“…Geographic information system (GIS) has been used previously to study the occurrence of groundwater F levels and related health issues . The present study aims to provide a more accurate view of the groundwater issue in Sri Lanka.…”

Section: Introductionmentioning

confidence: 99%

The heterogeneous nature of water well fluoride levels in Sri Lanka: An opportunity to mitigate the dental fluorosis

Ranasinghe

Kruger

Chandrajith

et al. 2019

Comm Dent Oral Epid

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“…Apart from the geological and hydrogeological factors, the dry climate is also acting as an important factor of fluoride enrichment (Gupta et al 2005;Samal et al 2020). This information is confirmed from Western Indian states Gujarat (Prajapati et al 2017), Rajasthan (Kesari et al 2021) and south Indian states Tamil Nadu (Sajil Kumar 2017) and Andhra Pradesh (Adimalla et al 2019).…”

Section: Introductionmentioning

confidence: 77%

Groundwater fluoride contamination in Coimbatore district: a geochemical characterization, multivariate analysis, and human health risk perspective

Kumar

2021

Environ Earth Sci

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In this paper, fluoride geochemistry and health risk of groundwater in Coimbatore district is studied. The order of dominance of ions were HCO3 > Cl > SO4 > CO3 and Na > Ca > Mg > K. Alkaline groundwater and the dominance of HCO3 and Na is favourable for the fluoride enrichment. Around 46% of the samples, N–NE regions, have F− higher than permissible limit of 1.5 mg/L. Pink granites, charnockite and gneisses in lithology is the possible origin of F−. However, NO3 vs F plot shows positive trend in some samples, indicating anthropogenic inputs of F−. Correlation plots of F− was trending positive with pH, HCO3 and Na and but negative for Ca, indicating the control of these ions in F− mobility. This result is supported by undersaturation of fluorite and supersaturation of carbonates. Four significant principal components were derived, which have explained 87% of the total variation. PC1 has high factor loadings for EC, Ca, Mg Na, Cl, SO4, NO3 indicating both natural and anthropogenic influences. PC2, PC3 and PC4 have higher loading for pH and HCO3, K and HCO3 and F−, respectively, indicating geogenic factors in the F− enrichment. Human health risk assessment (HHRA) by ingestion and dermal pathways were calculated using Hazard Quotient HQ and Hazard Index (HI). 27% of males, 36% of females and 39% of the children have HI > 1, posing noncarcinogenic risks.

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“…It is clear that potential hydrogen is one of the causes to be found higher fluoride in the study area, while some samples in the study may have low fluoride concentrations because the study area under the part of the semiarid environment and solubility process of F − in groundwater vary from one rock formation to another. If pressure and temperature was under normal conditions, fluoride-bearing minerals have been sparingly soluble in water; under certain physicochemical conditions, dissolution processes are too fast (Prajapati et al 2017;Adimalla et al 2019d;Vikas et al 2009;Adimalla 2020c). In the semiarid region, soil plays a major role in weathering and aqueous leaching processes that determine the amount of F − in groundwater.…”

Section: Fluoride Ion Chemistry In Groundwatermentioning

confidence: 99%

Monitoring of groundwater quality for drinking purposes using the WQI method and its health implications around inactive mines in Vemula-Vempalli region, Kadapa District, South India

2020

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A study was conducted to evaluate the groundwater quality and health risk assessment for drinking purposes around inactive mining areas in the rural regions of Vemula-Vempalli region using the water quality index (WQI) method. For this study, forty groundwater samples were collected from bore wells and analyzed for physical parameters and major cations and anions followed by standard methods of APHA. From the analytical results, most of the groundwater samples are in alkaline nature; EC, TDS, and TH values are below the permissible limit and major cations (Ca 2+ , Mg 2+ , K + , Na +) & anions (Cl − , HCO 3 , SO 4 2− , F − , NO 3 −) also within the permissible limit except fluoride and nitrate. Fluoride and nitrate in the groundwater range between 0.24-3 and 0.14-269 mg/L, respectively. Magmatic intrusions and water-rock interactions are main responsible for elevated fluoride in groundwater, and agricultural practices and usage of fertilizer are major responsible for higher nitrates in the groundwater. Piper diagram reveals that most of the samples belong to hydrochemical facies Ca 2+-Mg 2+-HCO 3 − category in this region. A higher concentration of fluoride and nitrate in the groundwater may cause a serious impact on human health. Non-carcinogenic effects of F − and NO 3 − were computed using total hazard index by adopting USEPA guidelines; THI values in drinking water range from 0.41 to 7.28 (adults), 0.41 to 7.38 (children) and 0.31 to 5.62 (infants); it reveals that children are more prone to the health impact than adults and infants. Overall assessment of WQI values (83.7-186.1 mg/L) shows that 7.5% (excellent), 80% (good), and 12.5% groundwater samples are very poor for drinking purpose in this region.

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Spatial distribution of groundwater quality with special emphasis on fluoride of Mandvi Taluka, Surat, Gujarat, India

Cited by 18 publications

References 14 publications

The heterogeneous nature of water well fluoride levels in Sri Lanka: An opportunity to mitigate the dental fluorosis

The heterogeneous nature of water well fluoride levels in Sri Lanka: An opportunity to mitigate the dental fluorosis

Groundwater fluoride contamination in Coimbatore district: a geochemical characterization, multivariate analysis, and human health risk perspective

Monitoring of groundwater quality for drinking purposes using the WQI method and its health implications around inactive mines in Vemula-Vempalli region, Kadapa District, South India

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