Vulnerability of underground aquifers to contamination: DRASTIC method based models comparison

Abstract

The hydrographic basin of Sordo river was studied for its vulnerability resulting from the eventual contamination of their underground waters, using the DRASTIC model presented by aller et al. (1985), determined by seven parameters, with different weights. Due to its subjective characteristics, a fuzzy modulation was applied by the “multi-objective fuzzy pattern recognition model” developed by Zhou et al. (1999), which when applied to the DRASTIC model, tries to show its parameters stiffness for vulnerability evaluation. To the same basin was also applied the “Nitrate Concentration Model” to review the aquifer system vulnerability to pollution, and the chosen methodology was developed by Antonakos e Lambrakis (2007).