| Component | Eigenvalue | Percentage variance | Cumulative percentage variance | First 4 eigenvector coefficients | Associated variables |
| 1 | 3.736600 | 20.75889 | 20.75889 | −0.877176 | TCC |
| −0.876495 | TFC | ||||
| −0.866995 | TFS | ||||
| −0.540642 | pH | ||||
| 2 | 2.608091 | 14.48939 | 35.24828 | 0.665031 | SO4 |
| 0.499548 | Ca | ||||
| −0.494256 | Chloride | ||||
| 0.480129 | Salinity | ||||
| 3 | 2.374754 | 13.19308 | 48.44136 | 0.655017 | Pb |
| −0.642994 | Hardness | ||||
| −0.632820 | Cu | ||||
| −0.566887 | SO4 |