Guidance
Drinking water scheme: sample schedule
Updated 9 March 2022
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Drinking water scheme
Water microbiology examinations
Sample schedule for 1 April 2022 to 31 March 2023
| Distribution number | Sample numbers | Dispatch date | Date results due by | Examinations and enumerations required – up to 3 sets of results can be reported* |
|---|---|---|---|---|
| W202 | W202A W202B | 4 Apr 2022 | 6 May 2022 | Coliform bacteria Escherichia coli Enterococci Clostridium perfringens Pseudomonas aeruginosa Colony count (37ºC/48 hours) Colony count (22ºC/72 hours) |
| W203 | W203A W203B | 6 Jun 2022 | 8 Jul 2022 | Coliform bacteria Escherichia coli Enterococci Clostridium perfringens Pseudomonas aeruginosa Colony count (37ºC/48 hours) Colony count (22ºC/72 hours) |
| W204 | W204A W204B | 1 Aug 2022 | 2 Sep 2022 | Coliform bacteria Escherichia coli Enterococci Clostridium perfringens Pseudomonas aeruginosa Colony count (37ºC/48 hours) Colony count (22ºC/72 hours) |
| W205 | W205A W205B | 3 Oct 2022 | 4 Nov 2022 | Coliform bacteria Escherichia coli Enterococci Clostridium perfringens Pseudomonas aeruginosa Colony count (37ºC/48 hours) Colony count (22ºC/72 hours) |
| W206 | W206A W206B | 9 Jan 2023 | 10 Feb 2023 | Coliform bacteria Escherichia coli Enterococci Clostridium perfringens Pseudomonas aeruginosa Colony count (37ºC/48 hours) Colony count (22ºC/72 hours) |
| W207 | W207A W207B | 20 Feb 2023 | 24 Mar 2023 | Coliform bacteria Escherichia coli Enterococci Clostridium perfringens Pseudomonas aeruginosa Colony count (37ºC/48 hours) Colony count (22ºC/72 hours) |
*Colony count per 1mL; all other counts are per 100mL