Table 4 Indicator counts for solar disinfected water samples collected after 6Â hrs of treatment and the corresponding untreated water samples collected at various temperatures
Disinfected Temperature | Indicator | Untreated Water Sample (Ave. CFU/100Â mL) | Treated Water Sample (Ave. CFU/100Â mL) after 6Â hrs | Reduction (%) |
|---|---|---|---|---|
52 °C | E. coli | 2 | BDL | >99 |
HPC | 7.05 Ă— 106 | BDL | >99 | |
68 °C | E. coli | 4 | BDL | >99 |
HPC | 7.95 Ă— 107 | BDL | >99 | |
70 °C | E. coli | 2 | BDL | >99 |
HPC | 9.95 Ă— 107 | BDL | >99 | |
75 °C | E. coli | 2 | BDL | >99 |
HPC | 8.7 Ă— 107 | BDL | >99 | |
89 °C | E. coli | 2 | BDL | >99 |
HPC | 1.45 Ă— 107 | BDL | >99 |