Table 2 Distribution of Escherichia coli , Salmonella spp., and Vibrio cholerae tap-water and bottled mineral water-positive samples from Isfahan province, Iran in different seasons
Sample water | Area | July-August* | September-October | November-December | Total positive |
|---|---|---|---|---|---|
|  | Western Isfahan (n = 36) | 8 | 4 | 0 | 12 (33.33%) |
Tap-water | Central Isfahan (n = 36) | 2 | 1 | 0 | 3 (8.33%) |
(n = 144) | Northern Isfahan (n = 36) | 7 | 1 | 2 | 10 (27.77%) |
|  | Southern Isfahan (n = 36) | 10 | 8 | 3 | 21 58.33%) |
|  | Total (n = 144) | 27 | 14 | 5 | 46 (31.94%) |
Bottled mineral water | Company 1 (n = 56) | 0 | 0 | 0 | 0 (0.0%) |
(n = 304) | Company 2 (n = 61) | 2 | 1 | 0 | 3 (4.91%) |
|  | Company 3 (n = 46) | 0 | 0 | 0 | 0 (0.0%) |
|  | Company 4 (n = 42) | 0 | 0 | 0 | 0 (0.0%) |
|  | Company 5 (n = 69) | 2 | 2 | 1 | 5 (7.24%) |
|  | Total (n = 304) | 4 | 3 | 1 | 8 (2.63%) |
Total (n = 448) | Total (n = 448) | 31 (6.91%) | 17 (3.79%) | 6 (1.33%) | 54 (12.05%) |