Sustainability Report 2007/08Microbiological parameters and pathogen monitoring
Exceeding reporting level and percentage in zones/population
The reporting levels for E. coli are based on Australian Drinking Water Guidelines (2004). Sampling results are based on monitoring at locations in our agreements with the retail water businesses. E. coli have been assessed using the defined substrate technology (Colilert) method and should not exceed the reporting level.
|
No. Exceeding Reporting Level (%) in Zones /
Population
|
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Parameter / Retail Water Businesses |
Reporting level
|
Total no. of zones
|
Total no. of tests
|
Total Exceedence
|
<10K
|
10K to 100K
|
>100K
|
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|
|
|
|
Fails |
% Fails |
No. Tests |
Fails |
% Fails |
No. Tests |
Fails |
% Fails |
No. Tests |
Fails |
% Fails |
| E.Coli (org/100mL) | ||||||||||||||
| All | 1 | 86 | 5499 | 0 | 0.00 | 2200 | 0 | 0.00 | 3819 | 0 | 0.00 | 1585 | 0 | 0.00 |
| YVW | 1 | 32 | 3209 | 0 | 0.00 | 1138 | 0 | 0.00 | 2384 | 0 | 0.00 | 1331 | 0 | 0.00 |
| CWW | 1 | 15 | 1358 | 0 | 0.00 | 336 | 0 | 0.00 | 1020 | 0 | 0.00 | - | - | - |
| SEW | 1 | 39 | 2368 | 0 | 0.00 | 726 | 0 | 0.00 | 1601 | 0 | 0.00 | 923 | 0 | 0.00 |
Note: The results have been calculated using the interface monitoring locations as listed in the BWSA 1999 for each retail water company