Table 2 Physico-chemical analysis of drinking water samples of different sources, Serbo town and its surroundings, 2012 (n = 90)

Temp (⁰C)

Mean

24.42

24.53

22.79

23.52

23.37

0.34

SD

1.15

1.23

1.03

1.93

2.16

%CV

4.7

5.03

4.52

8.23

9.24

pH

Mean

7.85

6.8

6.48

6.25

6.18

0

SD

0.22

0.56

0.22

0.34

0.37

%CV

2.8

8.24

3.47

5.39

5.98

EC

Mean

366.93

366.95

134.8

56.24

46.42

0

(μS/cm)

SD

5.24

262.65

126.41

19.98

15.59

%CV

1.43

71.58

93.77

35.52

33.59

Turbidity (NTU)

Mean

1.87

3.78

24.22

10.64

14.59

0.03

SD

0.43

5.78

20.45

5.68

10.06

%CV

22.99

152.81

84.45

53.37

68.97

DO(mg/l)

Mean

3.96

4

3.53

5.3

5.9

0.26

SD

1

0.94

0.83

0.36

3.61

%CV

25.17

23.46

23.62

6.83

61.22

PO₄3^- (mg/l)

Mean

1.21

0.29

0.56

0.77

0.76

0.03

SD

0.38

0.12

0.42

0.26

0.55

%CV

31.27

40.06

74.63

33.64

72.02

NO₃- (mg/l)

Mean

1.92

42.39

8.48

5.6

2.55

0.09

SD

0.26

37.99

10.43

4.44

1.3

%CV

13.39

89.62

123.05

79.28

50.78

TSS (mg/l)

Mean

5.93

83.01

66.33

23.47

101.08

0.25

SD

2.25

112.76

25.9

10.08

97.24

%CV

37.94

135.85

39.05

42.97

96.19

TDS(mg/l)

Mean

524.73

415.13

348.17

327.33

137.19

0

SD

51.25

175.37

49.57

101.86

18.98

%CV

9.77

42.24

14.24

31.12

13.83

BOD(mg/l)

Mean

9.8

34.67

62.89

22.93

35.33

0

SD

1.21

7.15

11.93

1.98

9.43

%CV

12.32

20.61

18.97

8.64

26.69