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Table 6 Physico-chemical parameters of different clustered groups

From: An application of Water Quality Index (WQI) and multivariate statistics to evaluate the water quality around Maddhapara Granite Mining Industrial Area, Dinajpur, Bangladesh

  PH EC Turbidity TA TH Ca2+ Mg2+ Na+ K+ As3+ Cd2+
Cluster I
 Min 5.3 41 3 5 2.5 1.3 1 2.1 0.4 0 0.0008
 Max 9.02 194 45 74 43 28 41 53 5.72 0.0017 0.0033
 Mean 7.42 98.28 12.26 24.70 15.05 9.78 9.15 11.55 2.05 0.001 0.0018
Cluster II
 Min 6.6 188 4 14 17.5 9.4 5 15.5 3.44 0 0.0009
 Max 8.38 587 10 88 87.5 51 36.5 37.9 12.2 0.0016 0.0042
 Mean 7.65 274.71 6.71 38.86 41.25 26.7 14.55 22.73 6.18 0.001 0.0027
Cluster III
 Min 8.03 380 4 59 70 51 15 19.7 5.72 0.0011 0.0032
 Max 8.13 587 8 88 87.5 55 36.5 37.9 12.2 0.0014 0.0039
 Mean 8.08 483.5 6 73.5 78.75 53 25.75 28.8 8.96 0.00125 0.0036
  Fe3+ Zn2+ Cr3+ \({\text{SO}}_{4}^{{2{ - }}}\) \({\text{PO}}_{4}^{3 - }\) SiO2 NO3 Cl NH4 + TDS \({\text{CO}}_{3}^{2 - }\)
Cluster I
 Min 0.09 0.08 0 0.08 0.08 11.9 0.07 0.71 0.22 24 4.3
 Max 0.92 0.23 0.015 2 0.64 53.84 0.63 15.76 1.07 135.8 13.6
 Mean 0.34 0.13 0.002 0.39 0.32 28.25 0.31 4.52 0.68 71.49 8.39
Cluster II
 Min 0.16 0.1 0.0014 0.16 0.27 12.85 0.24 6.39 0.38 141.4 7.85
 Max 0.52 0.3 0.005 10 2.3 35.9 0.71 73.84 0.92 382 18
 Mean 0.34 0.2 0.002 2.43 1.04 29.51 0.47 26.57 0.70 190.01 11.71
Cluster III
 Min 0.24 0.3 0.0023 0.55 0.37 32.45 0.41 13.49 0.84 247 15
 Max 0.52 0.32 0.003 1.52 0.52 37.15 0.45 73.84 1.04 382 18
 Mean 0.38 0.31 0.00265 1.035 0.445 34.8 0.43 43.665 0.94 314.5 16.5