Parameter PC1 PC2 PC3
Alkalinity 0.31881 -0.41704 -0.12066
Ammonia -0.10772 0.06600 -0.05462
Calcium 0.43365 -0.15237 -0.10097
COD -0.29351 -0.07623 -0.13840
Colour -0.08028 -0.24234 0.44076
Conductivity 0.42307 -0.19351 -0.11142
Hardness 0.43420 -0.17996 -0.09648
Chlorine 0.04218 -0.01864 -0.18426
Iron 0.04309 -0.13804 0.52467
o-Phosphate -0.04226 -0.06378 -0.02941
Nitrate 0.26770 0.44664 0.13679
Nitrite -0.09440 0.11824 -0.04021
pH -0.23475 -0.44597 -0.20023
Temperature 0.04915 -0.10005 0.14823
Turbidity 0.04797 -0.17656 0.54698
Eigenvalue 4.51970 2.62920 2.39520
Percent of variance 25.11 14.61 13.31
Cumulative percentage 25.11 39.72 53.02
Table 2: Principal component axis data.