Location

Total Coliform

(CFU/100 ml)

Escherichia coli

(CFU/100 ml)

Total Heterotrophic Bacteria (CFU/100 ml)

Wet season

Dry season

Wet season

Dry season

Wet season

Dry season

1.

211

20

84

6

511

221

2.

419

0

138

0

225

7

3.

105

32

31

12

297

208

4.

10

15

0

1

132

88

5.

105

6

43

1

253

30

6.

1

24

0

2

80

225

7.

10

5

0

1

191

11

8.

23

0

5

0

30

10

9.

89

9

10

1

153

75

10.

56

17

17

5

211

168

11.

21

2

5

0

259

10

12.

17

0

4

0

84

10

13.

82

13

0

2

232

201

14.

51

2

0

0

101

4

Max.

419

32

138

12

511

225

Min.

1

0

0

0

30

4

Mean

85.71

10.36

22.00

2.21

197.07

90.57

SD

111.327

10.119

37.783

3.378

120.109

92.514

Standards

WHO (2006)

0

0

0

0

<500

<500

UNBS (2008)

0

0

0

0

<500

<500