Table 2 Microbiological surveillance of tap water*
| Â | Group 1 | Group 2 | Group 3 | Group 4 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Â | G | C | V | B | G | C | V | B | G | C | V | B | G | C | V | B |
Run 1 | < | < | < | - | < | < | < | + | < | < | < | - | < | < | + | - |
Run 2 | 30 | < | < | - | 10 | < | < | - | < | < | + | - | < | < | + | - |
Run 3 | < | < | < | - | < | < | < | - | < | < | < | - | 110 | < | < | - |
Run 4 | 10 | < | < | - | 20 | < | < | - | 10 | < | + | - | < | < | + | - |
Run 5 | < | < | < | + | < | < | + | - | < | < | + | - | < | < | + | - |
Run 6 | < | < | < | - | < | < | < | - | < | 3 | < | + | < | 1 | + | - |
Run 7 | 10 | < | < | - | < | < | + | + | < | < | < | - | < | < | + | - |
Run 8 | < | < | < | + | < | 4 | < | - | < | < | < | - | < | < | < | - |
Alert 1 | < | < | < | - | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
Alert 2 | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | < | < | < | + |
Alert 3 | Â | Â | Â | Â | Â | Â | Â | Â | 10 | < | + | - | Â | Â | Â | Â |
Alert 4 | Â | Â | Â | Â | < | < | < | - | Â | Â | Â | Â | Â | Â | Â | Â |