Hydrogeochemical investigation of groundwater quality in the hard rock terrain of South India using Geographic Information System (GIS) and groundwater quality index (GWQI) techniques

Adimalla, Narsimha; Taloor, Ajay Kumar

doi:10.1016/j.gsd.2019.100288

Cited by 197 publications

(79 citation statements)

References 41 publications

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“…This technique is used to decrease the large amount of water quality parameters in a single numerical value to assess groundwater quality status. This method has been used in many groundwater analysis studies [35][36][37][38][39][40] In general, there are 3 main steps required to develop the WQI. These steps are assigning weights, calculating rating scale and aggregation of sub-indices to produce the final index.…”

Section: Groundwater Quality Indexmentioning

confidence: 99%

Evaluation of Groundwater Quality Using Groundwater Quality Index (GWQI) in Sharjah, UAE

et al. 2021

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The rapid growth in the world population resulted in an increase of the freshwater needs in many sectors. Groundwater is the most important freshwater source specially for arid and semi-arid regions due to lack of surface water sources and low precipitation rates in those regions. In this study, monthly groundwater quality data were collected from eleven well fields in Sharjah over the period of 2004-2017. Water quality parameters including bicarbonate, calcium, chloride, fluoride, magnesium, sodium and sulphate were selected for the analysis. In the study, water quality index (WQI) process is used to develop groundwater quality index (GWQI) for Sharjah using above mentioned water quality parameters. Mann-Kendall and Spearman’s Rho tests were adopted as non-parametric trend tests for temporal (trend) analysis of GWQI, whereas inverse distance weighting interpolation was used in GWQI spatial trend analysis. Temporal trend analysis results showed significant trends in 8 out of 11 well fields. Spatial analysis showed the highest values for salinity ions in the well fields closest to the northern region, whereas the lowest values were detected in the southern region.

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Section: Groundwater Quality Indexmentioning

confidence: 99%

Evaluation of Groundwater Quality Using Groundwater Quality Index (GWQI) in Sharjah, UAE

et al. 2021

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“…Similarly, 12.3% of samples are unsuitable based on the MAR values, 3% are unfit based on RSC and KR, and 1.5% samples are under doubtful and unsuitable based on Na% values. High values of these indices may have negative impacts on crop productivity and soil fertility [64,65]. USSL diagram is plotted to determine the suitability of groundwater for irrigation as it evaluates the groundwater quality-based SAR values and salinity hazard, i.e., EC.…”

Section: Suitability Of Groundwater For Irrigationmentioning

confidence: 99%

Integration of multivariate statistics and water quality indices to evaluate groundwater quality and its suitability in middle Gangetic floodplain, Bihar

2021

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This study is conducted along the middle Gangetic floodplain, to investigate the hydrogeochemical characteristics and suitability of groundwater for irrigation and human consumptions. Altogether 65 groundwater samples were collected and analyzed for major ions and water quality parameters. pH of all the samples except 1 is found > 7, which suggests alkaline aquifer condition. Groundwater samples predominately belong to Ca-Mg-HCO3 water type followed by Na-HCO3, Mg-HCO3 and Mg-SO4 water types. Hierarchical cluster analysis (HCA) combines groundwater into two distinct groups, Group 1 is found as less mineralized as the average EC value is found 625.3 μS/cm, while it is found 1375 μS/cm for Group 2. The results of correlation analysis and PCA suggest influence of natural and anthropogenic activities on groundwater. PCA extracts four major PCs which describes 71.7% of total variance. PC1 indicates influence of both lithogenic and anthropogenic activities on groundwater quality. PC2 and PC3 infer natural factors, and PC4 suggests influence of anthropogenic activities on groundwater. Exceeding concentration of F−, Fe and Mn above WHO guidelines are found as major public health concern. WQI of all except 4 groundwater samples suggests excellent to good water quality; however, 23% of the samples are not suitable based on WPI values. Irrigation indices suggest that groundwater is mostly suitable for irrigation; however, 10.7%, 12.3% and 3% samples for RSBC, MAR and KR, respectively, exceed the recommended limits and are unsuitable for irrigation. A proper management strategy and quality assurance is recommended before groundwater consumption and use in the study area.

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“…Due to heavy rainfall in the post-monsoon period, agriculture wastewater will be flown into the inactive mine impoundment. Poultry waste disposal and household/cultivate animal dung fertilizers which were used in agriculture utility are deposited in inactive mine impoundment that reach the groundwater through the infiltration and return flow of irrigation for drinking purposes (Abdesselam et al 2016;Ako et al 2014;Raju et al 2009a, b;Lokesh 2013;Oenema et al 2005;Adimalla and Taloor 2020). As the majority of the people in this region depend on agricultural practices for their livelihood, the application of fertilizers for crop yields might also be the chief contributing factor for high nitrate concentration.…”

Section: Nitrates 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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Hydrogeochemical investigation of groundwater quality in the hard rock terrain of South India using Geographic Information System (GIS) and groundwater quality index (GWQI) techniques

Cited by 197 publications

References 41 publications

Evaluation of Groundwater Quality Using Groundwater Quality Index (GWQI) in Sharjah, UAE

Evaluation of Groundwater Quality Using Groundwater Quality Index (GWQI) in Sharjah, UAE

Integration of multivariate statistics and water quality indices to evaluate groundwater quality and its suitability in middle Gangetic floodplain, Bihar

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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