Estimation of Vulnerability of Groundwater in a Granitic Aquifer to Pollution using Entropy Theory

Entropy theory was used to estimate the vulnerability of groundwater aquifer to pollution which could have a degree of uncertainty of liable different dynamic systems. Mainly three parameters such as precipitation, groundwater level, and total dissolved solids in groundwater in a granitic area from Peninsular India are considered and tested. Results show that interaction entropy is comparatively higher in high risk vulnerability zone, whereas it is lower to negligible in low risk vulnerability areas. Therefore, the risk areas of groundwater pollution could be demarcated by virtue of interaction entropy, which provided the same outcomes as achieved on the DRASTIC map. The significance of this work is in evaluating the degrees of aquifer vulnerability for groundwater pollution. An aquifer vulnerability map could be prepared for the whole country by selecting suitable sites for the development of industries.