Assessment of groundwater pollution in West Delhi, India using geostatistical approach

Adhikary, Partha Pratim; Chandrasekharan, H.; Chakraborty, Debashis; Kamble, Kalpana

doi:10.1007/s10661-009-1076-5

Cited by 98 publications

(35 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The National Capital Territory (NCT) of Delhi, India, is a water scarce state with a deficit in the drinking water supply which is available for its residents Shekhar and Prasad [17]. The exploration, exploitation and unscientific management of ground water resources in the NCT of Delhi, India, have posed a serious threat of reduction in their quantity and deterioration of their quality (Adhikary et al, [18], thus leading to increased consumption of packaged drinking water.…”

Section: Study Areamentioning

confidence: 99%

Physico-Chemical and Bacterial Evaluation of Packaged Drinking Water Marketed in Delhi - Potential Public Health Implications

Singla¹

2014

JCDR

View full text Add to dashboard Cite

Section: Study Areamentioning

confidence: 99%

Physico-Chemical and Bacterial Evaluation of Packaged Drinking Water Marketed in Delhi - Potential Public Health Implications

Singla¹

2014

JCDR

View full text Add to dashboard Cite

“…It is flexible and it permits the investigation of spatial autocorrelation of the variables. One of the main advantages of kriging is that it presents a possibility to estimate the interpolation error of the values and the regionalised variable when there are not initial measurements (Adhikary et al, 2010). This tool is a local estimation technique that provides the best linear unbiased estimator of a studied unknown characteristic.…”

Section: Discussionmentioning

confidence: 99%

Integrative Methodology for the Identification of Groundwater Flow Patterns: Application in a Semi-Arid Region of Mexico

Navarro-Solís¹

2016

Appl Ecol Env Res

View full text Add to dashboard Cite

Abstract. Generating knowledge to explain the dynamics and physicochemical characteristics of groundwater is essential to ensure its availability for different uses. Therefore, in this article we propose an integrated methodology that may help to define the flow patterns governing the movement of groundwater in a semiarid region of Mexico. The methodology incorporates hydrogeochemical characterization with the application of flow systems theory, the behaviour of arsenic and fluoride as indicators of the quality for human consumption and a correlation matrix to identify potential areas of recharge-discharge; these variables are grouped in Geographic Information Systems (GIS). The results explain how the movement of groundwater was influenced by the dissolution of silicates with the geochemical evolution of arsenic under two natural conditions; however, in one of these conditions, the mobility was facilitated by the presence of mining activities, whereas fluoride exhibited two situations, one natural and the other anthropogenic. Four hydrogeochemical facies were manifested in three flow patterns, with a potential recharge zone in the west of the study area, a discharge zone in the east and a mixture flowing to the northwest. We concluded that the proposed methodology represents a tool for facilitating understanding of the movement of groundwater.

show abstract

“…The semivariogram may be mathematically described as the mean square variability between two neighboring points of distance as shown in Eq. 2 [27]:…”

Section: Statistical and Geostatistical Analysismentioning

confidence: 99%

“…Performance evaluations of the fitted models were checked on the basis of cross validation tests. The coefficient of determination (R 2 ), root mean square errors (RMSE), mean square error (MSE), mean absolute error (MAE), and normalized root mean square error (NRMSE) statistics were utilized to evaluate the employed models [27]:…”

Section: Statistical and Geostatistical Analysismentioning

confidence: 99%

Seasonal Assessment of Nitrate, Nitrite, and Heavy Metals Pollution in Groundwater of Ardabil Aquifer, Iran

Rezaverdinejad¹,

Rahimi²

2017

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

One of the most important resources for drinking water is groundwater. Recently, the quality of groundwater has been endangered due to several reasons, including human activities, vast agricultural activities, and the discharge of industrial wastewater containing nitrogen (N) and heavy metals. For this study we investigated the values of NO 3 , NO 2 , and some heavy metals and analyzed the groundwater of the Ardabil Aquifer area in wet and dry seasons. For this purpose we evaluated 76 wells in the study area. In order to analyze the results we used World Health Organization (WHO), U.S. Environmental Protection Agency (EPA), and Institute of Standard and Industrial Research of Iran (ISIRI) standards. The results indicated that, according to WHO and ISIRI, 10.5% of wells and, according to the EPA, 69.7% of wells have NO 3 above the standard level in the wet season, but in the dry season, according to WHO and ISIRI,29% and, according to the EPA, 80.6% of the wells have NO 3 above the permissible level. However, according to all standards, NO 2 values are less than the permissible level for drinking consumption. In terms of evaluation criteria of the simultaneous presence of NO 3 and NO 2 in drinking water (K), 29% of wells in the dry season and 13.15% of wells in the wet season have NO 3 and NO 2 problems. In order to find an appropriate interpolation method and zoning parameter of NO 3 and NO 2 , different interpolation methods were evaluated and Kriging method with the lowest error was chosen for zoning the parameters. According to zoning maps, in the wet season the Namin and south Ardabil areas, which have the most drinking water wells, contain values of NO 3 above the permissible levels, whereas the values of NO 3 are at the mediocre level in the dry season. In addition to NO 3 and NO 2 analysis, the evaluation of heavy metals pollution indices in the aquifer include: heavy metal pollution index (HPI), heavy metal evaluation index (HEI), and contamination degree (C d ). Generally, according to the EPA, in terms of NO 3 and NO 2 pollution, Ardabil aquifer is in an undesirable condition, and according to WHO and ISIRI standards, this area has a mediocre level of undesirable condition. According to HPI and C d indices, most parts are in a high class of heavy metal pollution, as well.

show abstract

Assessment of groundwater pollution in West Delhi, India using geostatistical approach

Cited by 98 publications

References 29 publications

Physico-Chemical and Bacterial Evaluation of Packaged Drinking Water Marketed in Delhi - Potential Public Health Implications

Physico-Chemical and Bacterial Evaluation of Packaged Drinking Water Marketed in Delhi - Potential Public Health Implications

Integrative Methodology for the Identification of Groundwater Flow Patterns: Application in a Semi-Arid Region of Mexico

Seasonal Assessment of Nitrate, Nitrite, and Heavy Metals Pollution in Groundwater of Ardabil Aquifer, Iran

Contact Info

Product

Resources

About