Table 2: The Total coliform counts (MPN/100 ml) for each water sample.
Product Code |
No of Tubes Giving a Positive Reaction |
MPN/100 ml |
95 % Confidence Limits |
Fecal Coliform Cfu/100 ml |
||
1 of 50 ml |
5 of 10 ml |
Lower |
Upper |
|
||
A |
0 |
0 |
< 1 |
- |
- |
0 |
B |
0 |
0 |
< 1 |
- |
- |
0 |
C |
0 |
0 |
< 1 |
- |
- |
0 |
D |
0 |
0 |
< 1 |
- |
- |
0 |
E |
0 |
1 |
1 |
0.5 |
4 |
0 |
F |
0 |
0 |
< 1 |
- |
- |
0 |
G |
0 |
0 |
< 1 |
- |
- |
0 |
H |
0 |
1 |
1 |
0.5 |
4 |
0 |
I |
0 |
1 |
1 |
0.5 |
4 |
0 |
J |
1 |
3 |
9 |
2 |
21 |
0 |
K |
0 |
0 |
< 1 |
- |
- |
0 |
L |
0 |
0 |
< 1 |
- |
- |
0 |
NB: Fecal coliform count gave no positive results from samples A to L, based on the analysis stated in Table 4, total coliform count was below 10 cfu/100 ml.