Public Health Regulation 2018

Drinking water in a drinking water service must be tested for the presence of—

Escherichia coli at the frequency stated in subsection (2); and

each required parameter at the frequency stated in the management plan for the water.

For subsection (1)(a), the frequency is—

if the drinking water service supplies drinking water to more than 100,000 people—

6 samples a week; and

for each 10,000 people supplied by the service over 100,000 people—1 additional sample a month; or

if the service supplies drinking water to more than 5,000 people but not more than 100,000 people—

1 sample a week; and

for each 5,000 people supplied by the service over 5,000 people—1 additional sample a month; or

if the service supplies drinking water to more than 1,000 people but not more than 5,000 people—1 sample a week; or

if the service supplies drinking water to 1,000 people or less—1 sample a month.

Escherichia coli must not be detected in a sample, of a minimum of 100mL, of drinking water.

If the quality of drinking water has been tested for Escherichia coli for at least 1 year under this section—

each month, the samples taken to test for Escherichia coli, other than resamples, during the preceding 1-year period must be reviewed; and

Escherichia coli must not be detected in at least 98% of the samples reviewed.

Each sample of drinking water must not contain an amount of an ADWG parameter more than the guideline value for health for the parameter stated in the physical and chemical guideline table.

Each sample of drinking water must comply with the guideline value for radioactivity stated in the radiological guideline table.

Subsections (5) and (6) apply to drinking water tested for an ADWG parameter or radioactivity, whether or not the management plan for the water required the water to be tested for the parameter or radioactivity.

In this section—