| Variables | PC1 | PC2 |
| TDS | 0.989 | 0.054 |
| Ca2+ | 0.813 | −0.449 |
| Mg2+ | 0.755 | 0.105 |
| Na+ | 0.832 | 0.376 |
| K+ | 0.632 | 0.630 |
|
| −0.109 | 0.774 |
| Cl− | 0.956 | −0.184 |
|
| 0.561 | 0.553 |
| Br− | 0.739 | −0.428 |
| pH | −0.338 | 0.628 |