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Table 4 reveals that about 90% of the groundwater samples are oversaturated with respect to dolomite and calcite, reflecting a tendency for precipitation. On the other hand, the groundwater samples are undersaturated with respect to gypsum, anhydrite and halite, reflecting a tendency for continuing dissolution of these salts from the aquifer matrix.

Table 4

Saturation indices of collected groundwater samples using (SPSS 22 software)

Sample IDAnhydriteCalciteDolomiteGypsumHalite
−1.453 0.929 2.653 −1.166 −3.884 
−1.276 1.03 3.103 −0.988 −4.662 
−1.629 0.548 1.431 −1.339 −6.847 
−0.937 0.511 1.453 −0.651 −3.649 
−1.222 0.517 1.852 −0.934 −4.339 
−1.053 0.287 1.928 −0.765 −4.709 
−1.679 −0.585 0.676 −1.392 −3.937 
−1.694 −0.433 1.01 −1.406 −4.081 
−1.075 0.117 1.104 −0.787 −4.338 
10 −0.977 0.834 2.446 −0.688 −4.411 
11 −1.009 0.22 1.341 −0.721 −4.539 
12 −1.176 0.301 1.972 −0.888 −4.416 
13 −0.911 0.351 1.477 −0.623 −4.628 
14 −2.413 −1.288 0.084 −2.127 −3.738 
16 −1.267 0.141 1.798 −0.978 −4.65 
17 −1.165 0.394 1.694 −0.877 −4.579 
18 −1.147 0.059 1.102 −0.858 −4.58 
19 −0.75 0.347 1.298 −0.461 −5.075 
20 −0.751 −0.172 0.24 −0.464 −4.069 
21 −1.703 0.593 2.219 −1.414 −5.123 
22 −1.153 0.454 1.599 −0.865 −4.144 
23 −1.826 0.634 2.055 −1.537 −6.744 
24 −1.504 0.244 1.439 −1.216 −4.003 
25 −2.082 −0.583 1.299 −1.796 −3.882 
26 −0.753 0.345 1.606 −0.466 −4.056 
27 −0.953 0.314 1.199 −0.666 −3.912 
28 −0.633 0.434 1.687 −0.345 −4.699 
29 −0.893 0.192 1.458 −0.605 −4.438 
30 −0.988 0.615 2.108 −0.7 −4.668 
31 −0.63 0.125 1.368 −0.344 −3.964 
32 −0.859 0.434 1.626 −0.571 −4.534 
33 −1.05 0.275 1.556 −0.761 −5.238 
34 −1.502 0.751 2.815 −1.212 −5.435 
35 −1.929 0.385 1.886 −1.641 −4.614 
36 −1.027 0.24 1.213 −0.74 −3.994 
37 −1.077 0.21 1.54 −0.79 −3.852 
38 −2.368 0.175 0.973 −2.078 −6.184 
39 −0.73 0.305 1.795 −0.443 −3.932 
Sample IDAnhydriteCalciteDolomiteGypsumHalite
−1.453 0.929 2.653 −1.166 −3.884 
−1.276 1.03 3.103 −0.988 −4.662 
−1.629 0.548 1.431 −1.339 −6.847 
−0.937 0.511 1.453 −0.651 −3.649 
−1.222 0.517 1.852 −0.934 −4.339 
−1.053 0.287 1.928 −0.765 −4.709 
−1.679 −0.585 0.676 −1.392 −3.937 
−1.694 −0.433 1.01 −1.406 −4.081 
−1.075 0.117 1.104 −0.787 −4.338 
10 −0.977 0.834 2.446 −0.688 −4.411 
11 −1.009 0.22 1.341 −0.721 −4.539 
12 −1.176 0.301 1.972 −0.888 −4.416 
13 −0.911 0.351 1.477 −0.623 −4.628 
14 −2.413 −1.288 0.084 −2.127 −3.738 
16 −1.267 0.141 1.798 −0.978 −4.65 
17 −1.165 0.394 1.694 −0.877 −4.579 
18 −1.147 0.059 1.102 −0.858 −4.58 
19 −0.75 0.347 1.298 −0.461 −5.075 
20 −0.751 −0.172 0.24 −0.464 −4.069 
21 −1.703 0.593 2.219 −1.414 −5.123 
22 −1.153 0.454 1.599 −0.865 −4.144 
23 −1.826 0.634 2.055 −1.537 −6.744 
24 −1.504 0.244 1.439 −1.216 −4.003 
25 −2.082 −0.583 1.299 −1.796 −3.882 
26 −0.753 0.345 1.606 −0.466 −4.056 
27 −0.953 0.314 1.199 −0.666 −3.912 
28 −0.633 0.434 1.687 −0.345 −4.699 
29 −0.893 0.192 1.458 −0.605 −4.438 
30 −0.988 0.615 2.108 −0.7 −4.668 
31 −0.63 0.125 1.368 −0.344 −3.964 
32 −0.859 0.434 1.626 −0.571 −4.534 
33 −1.05 0.275 1.556 −0.761 −5.238 
34 −1.502 0.751 2.815 −1.212 −5.435 
35 −1.929 0.385 1.886 −1.641 −4.614 
36 −1.027 0.24 1.213 −0.74 −3.994 
37 −1.077 0.21 1.54 −0.79 −3.852 
38 −2.368 0.175 0.973 −2.078 −6.184 
39 −0.73 0.305 1.795 −0.443 −3.932 

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