Parameter

BSU

Kakoba

Katete

GBK

Spencon

Mean

SD

Colour (PtCo)

830

757

670

890

887

806.8

93.7

Turbidity (NTU)

105

101.3

100

96

98.3

100.12

3.4

TSS (mg/L)

43

42

44.3

41.3

46

43.3

1.9

Hardness (mg/L)

56.7

56

57.3

49.7

53

54.5

3.2

Alkalinity (mg/L)

29.3

33

56.3

22

25.3

33.2

13.6

pH

6.74

6.73

6.92

6.51

6.63

6.71

0.2

TDS (mg/L)

52.53

53.27

51.4

54.6

58.37

54.03

2.7

EC (µs/cm)

101.13

107.07

104.73

108.07

102.33

104.67

3.0

Salinity (mg/L)

0.053

0.053

0.053

0.06

0.053

0.05

0.0

Temperature (˚C)

22.73

22.57

22.5

22.63

22.63

22.61

0.1

Sulphate (mg/L)

14.67

12.33

12

10.67

10.33

12.00

1.7

COD (mg/L)

115

138.7

186.3

60.7

143.3

128.8

45.9

BOD (mg/L)

43

53

84

45.3

37.7

52.60

18.4

DO (mg/L)

9.55

10.44

12.67

6.73

6.48

9.17

2.6

NH₃-N (mg/L)

10.81

10.51

9.49

6.01

5.66

8.50

2.5

Mg (mg/L)

7.33

10.33

9.67

8

8

8.67

1.27

Ca (mg/L)

18

10.67

9.33

8.33

7

10.67

4.31

Fe (mg/L)

0.517

0.514

0.541

0.502

0.573

0.529

0.028

Mn (mg/L)

0.114

0.143

0.0473

0.123

0.049

0.095

0.044