Table 2.
Presumptive Escherichia coli counts and pathogen log reduction from wastewater treatment plants
| Sampling point | Concentration of E. coli (log10 CFU/mL) |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Influent |
Biofilter |
Effluent |
||||||||||
| T1 | T2 | T3 | Mean | T1 | T2 | T3 | Mean | T1 | T2 | T3 | Mean | |
| 1 | 4.3 | 4.1 | 4.3 | 4.2 | — | — | — | — | 3.3 | 3.3 | 0 | 2.2 |
| 2 | 4.5 | 4.3 | 4.3 | 4.4 | 4.5 | 4.2 | 4.0 | 4.2 | 3.6 | 3.0 | 3.0 | 3.2 |
| 3 | 4.3 | 4.1 | 4.0 | 4.1 | 4.3 | 4.0 | 3.5 | 3.9 | 3.0 | 0 | 0 | 1.0 |
T1, T2 and T3 refer to sampling time points.