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Table 5 Average values of the selected parameters at each location in the coastal and estuaries of river Rambungan, river Sibu, river Salak, and river Santubong in Sarawak, Malaysia

From: Application of fuzzy evaluation technique and grey clustering method for water quality assessment of the coastal and estuaries of selected rivers in Sarawak

Location Code Parameter
pH EC Tem Turbidity Salinity DO RedoxP NO3 PO4 NH3 TSS FC FS Cr
Unit μS/cm °C FNU ppt mg/L mV μg/L μg/L μg/L mg/L Cfu/100 mL μg/L
Rambungan CZ1 7.1 119.3 28.8 4.81 0.32 6.59 166 5.7 3.3 26.2 8.1 6.0 a Pleasant 4.1
Coastal area CZ2 7.7 5037 29.2 0.85 32.77 9.07 314 88.1 41 2.5 14.7 15.0 Pleasant 8.9
Coastal area CZ3 7.4 5113 28.3 0.69 33.38 9.11 335.97 80.3 32.9 4.32 12.2 13.5 Pleasant 11
Sibu CZ4 6.3 122 29.4 4.06 0.28 3.93 121 3.5 2.5 15.4 6.9 8.4 b Unpleasant 3.4
Coastal area CZ5 7.3 3385 27.8 0.61 31.63 8.37 456 61.3 15.8 4.2 19.1 19.0 Pleasant 6.1
Coastal area CZ6 7.7 5179 29.1 0.66 33.35 9.01 487.33 57.9 44.1 3.4 17.1 12.7 Pleasant 9.4
Salak CZ7 6.5 302.3 29.2 3.70 0.27 5.21 114.67 7.4 1.9 9.7 6.6 4.2 Pleasant 2.2
Coastal area CZ8 7.6 312.7 28.3 0.50 33.99 8.44 312 33.2 22.3 5.2 10.2 11.3 Pleasant 5.8
Coastal area CZ9 7.5 4996 28.7 0.70 34.36 9.81 503.27 40.1 31.4 2.5 17.7 9.9 Pleasant 7.1
Santubong CZ10 7.2 441.7 29.7 4.28 0.35 5.14 194.67 2.4 1.4 11.2 9.4 4.4 Pleasant 0.9
  1. EC stands for Electrical Conductivity, Tem represents Temperature, DO stands for Dissolved Oxygen, TSS stands for Total Suspended Solids, FC represents Faecal Coliform, and FS stands for Float Solids
  2. a Pleasant: Smell’s good
  3. b Unpleasant: Smell’s bad