Variables

Factors

N=150

Average pollution

Low pollution

RP (Χ2;-test)

Confidence interval limits

P

Seasons

Rainy season

77

24

51

34.32

4.75-713.19

<0.001

Dry season

75

1

74

Salmonella

Present

14

4

10

2.19

0.52-8.64

0.253

Absent

136

21

115

Vibrio cholerae

Present

125

13

112

12.92

4.37-39.28

<0.001

Absent

25

15

10
Table 5: Factors determining/influencing the degree of pollution of artesian water sources in urban and peri-urban areas of Bukavu town in 2011, eastern of Democratic Republic of Congo.