Groups   well depth (m) 3H TU 34S δ18O ‰ (Pre monsoon 2008) δ18O ‰ (post monsoon  2008) δ2H ‰(pre monsoon  2008) δ2H ‰(post monsoon  2008)
Strongly Geogenic Min. 4.3 2.7 6.9 -6.0 -4.9 -21.3 -19.7
Max. 243.8 10.5 15.4 -3.0 -1.9 -1.8 -4.4
Moderately geogenic Min. 9.1 3.2 3.7 -5.8 -4.6 -24.3 -22.4
Max. 140.2 9.3 14.7 -1.7 -2.3 -0.8 -1.1
Strongly Sewerage influence Min. 10.7 5.5 6.5 -4.7 -4.1 -18.2 -26.8
Max. 137.2 10.6 15.1 -2.9 -2.5 -11.5 -8.8
Moderately Sewage influence Min. 7.6 1.9 3.9 -5.9 -5.9 -25.4 -32.6
Max. 189.0 9.3 16.7 -2.3 -0.2 -2.8 -9.6
Table 1: Isotopic values in the major PCA generated groups.