Table 3: The number of river water samples positive and negative for coliphages, minimum and maximum for total coliphages in nine sub-cities of Addis Ababa using single agar layer between February and April 2017.
| Rivers |
Sub-Cities |
Phage +ve Samples |
Phage -ve Samples |
Min. [pfu/100ml] |
Max. [pfu/100ml] |
| R1 |
SC-1 |
2 |
3 |
0 |
600 |
| R 2 |
SC-1 |
0 |
2 |
0 |
0 |
| R 3 |
SC-1 |
2 |
3 |
0 |
400 |
| R 4 |
SC-2 |
1 |
1 |
0 |
300 |
| R 5 |
SC-2 |
0 |
2 |
0 |
0 |
| R 6 |
SC-2 |
1 |
1 |
0 |
200 |
| R 7 |
SC-3 |
1 |
0 |
150 |
150 |
| R 8 |
SC-3 |
3 |
0 |
20 |
70 |
| R 9 |
SC-3 |
4 |
1 |
0 |
200 |
| R 10 |
SC-3 |
1 |
1 |
0 |
80 |
| R 11 |
SC-4 |
1 |
4 |
0 |
360 |
| R 12 |
SC-4 |
0 |
5 |
0 |
0 |
| R13 |
SC-5 |
0 |
2 |
0 |
0 |
| R14 |
SC-5 |
1 |
1 |
0 |
400 |
| R15 |
SC-5 |
0 |
2 |
0 |
0 |
| R16 |
SC-6 |
1 |
4 |
0 |
50 |
| R17 |
SC-6 |
4 |
1 |
0 |
290 |
| R18 |
SC-7 |
1 |
1 |
0 |
60 |
| R19 |
SC-7 |
1 |
1 |
0 |
290 |
| R20 |
SC-7 |
1 |
1 |
0 |
5200 |
| R21 |
SC-7 |
2 |
0 |
250 |
3100 |
| R22 |
SC-3 |
1 |
0 |
80 |
80 |
| R23 |
SC-6 |
1 |
0 |
70 |
70 |
| R24 |
SC-2 |
0 |
2 |
0 |
0 |
| R25 |
SC-5 |
2 |
0 |
100 |
120 |
| R26 |
SC-9 |
1 |
0 |
1960 |
1960 |
| R27 |
SC-9 |
2 |
0 |
870 |
2200 |
| R28 |
SC-9 |
3 |
1 |
0 |
1500 |
| R29 |
SC-8 |
4 |
1 |
0 |
1600 |
| R30 |
SC-8 |
3 |
0 |
60 |
1700 |
R–river, SC–Sub-city, min.–minimum, max. –maximum