Groundwater quality assessment using WQI and GIS techniques, Dindigul district, Tamil Nadu, India

Magesh, N.S.; Krishnakumar, S.; Chandrasekar, N.; Soundranayagam, John Prince

doi:10.1007/s12517-012-0673-8

Cited by 136 publications

(61 citation statements)

References 16 publications

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“…Generally, the saturation indices (SI) are used to expresses the tendency of water towards precipitation or dissolution. The saturation state for a given a mineral is expressed as saturation index (SI), as given by Lee (1993):…”

Section: Chemical Equilibrium Saturationmentioning

confidence: 99%

Groundwater chemistry evaluation for drinking and irrigation utilities in east Wasit province, Central Iraq

Ghalib

2017

Appl Water Sci

100

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The present study focused on assessing the groundwater quality of the shallow aquifer in the northeastern Wasit Governorate, Iraq. The physicochemical parameters, including major cation and anion compositions, pH, total dissolved solid and electrical conductivity, were used to assess the suitability of groundwater quality for drinking purpose by comparing with the WHO and Iraqi standards. Total dissolved solid (TDS), sodium adsorption ratio, residual sodium bicarbonate, permeability index and magnesium ratio were used for irrigation suitability assessment. For this purpose, 98 samples were collected from the scattered shallow wells in the study area. Results indicated that the spatial distribution of TDS, EC values and major ions in these groundwater samples considerably differ from one site to another mainly due to the lithological variations of the area. The results are correlated with standards classifications to deduce the hydrogeochemical phenomena. The dominant factors in controlling the groundwater hydrogeochemistry are evaporation and weathering in the study area. Geochemical modelling approach was used to calculate the saturation state of some selected minerals, i.e., explaining the dissolution and precipitation reactions occurring in the groundwater. The studied groundwater samples were found to be oversaturated with carbonate minerals and undersaturated with evaporates minerals. A comparison of groundwater quality in relation to drinking water standards showed that most of the groundwater samples were unsuitable for drinking purposes. On the other hand, most groundwater is unsuitable for irrigation purposes based on sodium and salinity hazards. However, soil type as well as proper selection of plants should be taken into consideration.

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Section: Chemical Equilibrium Saturationmentioning

confidence: 99%

Groundwater chemistry evaluation for drinking and irrigation utilities in east Wasit province, Central Iraq

Ghalib

2017

Appl Water Sci

100

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“…Water quality index (WQI) is an important parameter for identifying the water quality and its sustainability for drinking purposes (Subba Rao, 1997;Magesh et al 2013). WQI is defined as a technique of rating that provides the composite influence of individual water quality parameters on the overall water quality (Mitra and ASABE Member 1998).…”

Section: Water Quality Index Calculation (Wqi)mentioning

confidence: 99%

Hydro-geochemistry and application of water quality index (WQI) for groundwater quality assessment, Anna Nagar, part of Chennai City, Tamil Nadu, India

Logeshkumaran²,

et al. 2014

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In the present study, the geochemical characteristics of groundwater and drinking water quality has been studied. 24 groundwater samples were collected and analyzed for pH, electrical conductivity, total dissolved solids, carbonate, bicarbonate, chloride, sulphate, nitrate, calcium, magnesium, sodium, potassium and total hardness. The results were evaluated and compared with WHO and BIS water quality standards. The studied results reveal that the groundwater is fresh to brackish and moderately high to hard in nature. Na and Cl are dominant ions among cations and anions. Chloride, calcium and magnesium ions are within the allowable limit except few samples. According to Gibbs diagram, the predominant samples fall in the rock-water interaction dominance and evaporation dominance field. The piper trilinear diagram shows that groundwater samples are Na-Cl and mixed CaMgCl type. Based on the WQI results majority of the samples are falling under excellent to good category and suitable for drinking water purposes.

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“…GIS-based groundwater quality index assessment has been carried out by many researchers, e.g., Noori et al (2014), Tiwari et al (2014), Selvam et al (2013), Magesh and Chandrasekar (2013), Ishaku et al (2012), Magesh et al (2012), Yue et al (2010), Reza and Singh (2010), etc. Babiker and Mohamed (2014) carried out GIS-based groundwater quality index assessment in Omdurman area of Central Sudan.…”

Section: Introductionmentioning

confidence: 99%

Impact of land-use on groundwater quality: GIS-based study from an alluvial aquifer in the western Ganges basin

Khan

Umar

2017

Appl Water Sci

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In this study, groundwater quality of an alluvial aquifer in the western Ganges basin is assessed using a GIS-based groundwater quality index (GQI) concept that uses groundwater quality data from field survey and laboratory analysis. Groundwater samples were collected from 42 wells during pre-monsoon and post-monsoon periods of 2012 and analysed for pH, EC, TDS, Anions (Cl, SO 4 , NO 3 ), and Cations (Ca, Mg, Na). To generate the index, several parameters were selected based on WHO recommendations. The spatially variable grids of each parameter were modified by normalizing with the WHO standards and finally integrated into a GQI grid. The mean GQI values for both the season suggest good groundwater quality. However, spatial variations exist and are represented by GQI map of both seasons. This spatial variability was compared with the existing land-use, prepared using high-resolution satellite imagery available in Google earth. The GQI grids were compared to the land-use map using an innovative GIS-based method. Results indicate that the spatial variability of groundwater quality in the region is not fully controlled by the land-use pattern. This probably reflects the diffuse nature of land-use classes, especially settlements and plantations.

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Groundwater quality assessment using WQI and GIS techniques, Dindigul district, Tamil Nadu, India

Cited by 136 publications

References 16 publications

Groundwater chemistry evaluation for drinking and irrigation utilities in east Wasit province, Central Iraq

Groundwater chemistry evaluation for drinking and irrigation utilities in east Wasit province, Central Iraq

Hydro-geochemistry and application of water quality index (WQI) for groundwater quality assessment, Anna Nagar, part of Chennai City, Tamil Nadu, India

Impact of land-use on groundwater quality: GIS-based study from an alluvial aquifer in the western Ganges basin

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