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

Abstract

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.

Development of a water quality index (WQI) for the Loktak Lake in India

“…Later, numerous researchers have carried out studies on water quality assessment using WQIs around the world in various water bodies (Pesce and Wunderlin 2000;Bordalo et al 2001;Abdul et al 2010;Akbal et al 2011;Altansukh and Davaa 2011;Hector et al 2012;Abdulwahid 2013;Mohamed et al 2014;Chrysoula et al 2014;Mehmet and Huseyin 2014;Will et al 2015;Gerald et al 2015;Hefni and Romanto 2015;Lobato et al 2015;Mehrnoosh et al 2015). Similarly, a number of studies have been carried out in India (Dwivedi and Pathak 2007;Joshi et al 2009;Samantray et al 2009;Chauhan and Singh 2010;Alam and Pathak 2010;Parmar and Parma 2010;Chaturvedi and Bassin 2010;Kalavathy et al 2011;Kankal et al 2012;Srinivas et al 2013;Prerna et al 2014;Salim and Ashok 2014;Jindal et al 2014;Mrunmayee et al 2015;Krishna et al 2014Krishna et al , 2015Kosha and Geeta 2015). However, there was no literature which reveals scientific study carried out with respect to WQI in NorthEast India, a mega biodiversity region.…”

Hydrogeochemical investigation of groundwater in shallow coastal aquifer of Khulna District, Bangladesh

“…The over dependence on groundwater for drinking, agricultural and industrial sector and different climatic and natural phenomenon causes coastal groundwater contamination (Srinivas et al 2015). Besides, different geochemical processes in groundwater governing the chemical characteristics of groundwater, is well documented in many parts of the world by many authors i.e., Montety et al (2008), Jalali (2009), Manjusree et al (2009), Thilagavathi et al (2012, Sivasubramanian et al (2013), Nagaraju et al (2014), Kumar et al (2015), Islam et al (2016a, b) and Balaji et al (2016). Geochemical studies of groundwater provide a better understanding of water quality and possible changes .…”

Hydrogeochemical analysis and evaluation of surface water quality of Pratapgarh district, Uttar Pradesh, India

“…Statistical methods help to explain the correlation among large number of populations and also to reduce the number of variables into small number of factors without the loss of essential information (Nadiri et al 2013). WOI and statistical methods are very useful and efficient for assessing the quality of water and for communicating the information on overall quality of water (Srivastava et al 2011;Yadav et al 2012;Verma and Singh 2013;Ravikumar et al 2013;Kumar et al 2014;Parmar and Bhardwaj 2014;Singh and Kamal 2014;Krishna Kumar et al 2014;Singh et al 2015a;Yadav et al 2015;Nasri et al 2015;Singh et al 2015b;Okiongbo and Douglas 2015;Tiwari et al 2015;Singh et al 2015c). …”