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Table 3 Comparison of particular water quality parameters’ mean values obtained from various studies on rivers and tributaries in Cameron Highlands

From: Land use change in highland area and its impact on river water quality: a review of case studies in Malaysia

No.

References/parameters (mean values)

pH

EC μS/cm

DO (mg/l)

TDS (mg/l)

Salinity (ppt)

Turbidity (NTU)

BOD (mg/l)

COD (mg/l)

NH3-N (mg/l)

TSS (mg/l)

TN (mg/L)

TP (mg/L)

WQI

1

Eisakhani and Malakahmad 2009a

6.90

52.11

–

23.60

–

–

–

13.40

–

16.01

1.70

0.22

–

2

Riduan et al. 2009

7.30

49.00

3.19

0.030

–

603.00

–

–

–

–

–

–

–

3

Saadati et al. 2012

–

67.90

–

13.20

0.03

170.75

–

–

–

480.00

–

–

–

4

Khalik et al. 2013aa

6.54

58.33

6.31

43.33

0.01

–

2.64

16.67

0.25

15.08

1.13

0.88

78.00 (class II)

5

Khalik et al. 2013b

6.52

51.83

4.83

38.40

–

–

–

–

0.14

–

–

1.60

–

6

Khalik and Abdullah 2013

7.40

95.69

9.28

40.00

0.02

–

–

–

–

–

–

–

–

7

Al-Nafiey et al. 2014

7.65

50.07

–

–

–

–

–

–

–

–

–

–

–

8

Jamil et al. 2014a

–

–

–

–

–

–

–

–

–

–

–

–

77.05 (class II)

9

Abdullah et al. 2015a

6.35

54.98

8.48

35.86

0.02

–

–

–

–

–

–

–

–

10

Aminu et al. 2014a

8.12

–

8.33

–

–

–

1.76

13.00

0.80

85.05

–

–

62.41 (class III)

11

Rasul et al. 2015

6.87

68.80

7.08

47.15

–

88.63

7.79

20.55

0.95

136.05

3.28

1.16

–

12

Tan and Beh 2016

6.19

–

6.84

–

–

–

2.90

27.42

0.23

0.05

–

–

82.92 (class II)

  1. aDry season/AWF (average water flow)