Table 4.
Principal component analysis of the collected groundwater and surface water samples
| Total variance explained | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Component | Initial eigenvalues | Extraction sums of squared loadings | Rotation sums of squared loadings | ||||||
| Total | % Of Variance | Cumulative % | Total | % Of variance | Cumulative % | Total | % Of Variance | Cumulative % | |
| 1 | 5.050 | 36.075 | 36.075 | 5.050 | 36.075 | 36.075 | 3.710 | 26.498 | 26.498 |
| 2 | 2.482 | 17.729 | 53.804 | 2.482 | 17.729 | 53.804 | 2.871 | 20.508 | 47.006 |
| 3 | 1.599 | 11.421 | 65.225 | 1.599 | 11.421 | 65.225 | 2.270 | 16.211 | 63.217 |
| 4 | 1.381 | 9.868 | 75.093 | 1.381 | 9.868 | 75.093 | 1.389 | 9.924 | 73.141 |
| 5 | 1.085 | 7.752 | 82.845 | 1.085 | 7.752 | 82.845 | 1.359 | 9.704 | 82.845 |
| 6 | .769 | 5.491 | 88.336 | ||||||
| 7 | .563 | 4.019 | 92.355 | ||||||
| 8 | .395 | 2.819 | 95.174 | ||||||
| 9 | .305 | 2.176 | 97.350 | ||||||
| 10 | .175 | 1.253 | 98.603 | ||||||
| 11 | .106 | .759 | 99.362 | ||||||
| 12 | .067 | .477 | 99.839 | ||||||
| 13 | .022 | .155 | 99.994 | ||||||
| 14 | .001 | .006 | 100.000 | ||||||
| Component Matrix using Principal Component Analysis | |||||||||
| Component | |||||||||
| 1 | 2 | 3 | 4 | 5 | |||||
| Hardness | .920 | .240 | .070 | .095 | .010 | ||||
| pH | − .262 | − .413 | − .017 | − .278 | .755 | ||||
| TDS | .915 | .276 | -.051 | -.033 | -.023 | ||||
| SO4 | .829 | .138 | .027 | -.296 | .156 | ||||
| NO3 | .483 | .166 | .562 | -.364 | .366 | ||||
| Al | -.017 | -.193 | .129 | .719 | .466 | ||||
| Ba | .412 | .158 | .615 | .459 | .015 | ||||
| Fe | .525 | .144 | -.732 | .264 | .166 | ||||
| Mn | .609 | .167 | -.554 | .032 | .212 | ||||
| Sr | .875 | .249 | .164 | .003 | -.140 | ||||
| Total Coliform | − .511 | .815 | − .045 | − .082 | .134 | ||||
| Fecal Coliform | − .512 | .807 | − .054 | − .081 | .137 | ||||
| Salmonella and Shigella | − .410 | .715 | .050 | − .079 | .084 | ||||
| Total Count | − .322 | .362 | .060 | .506 | .047 | ||||