Safe Drinking Water Regulations 2025

For the purposes of monitoring drinking water quality, a water supplier must develop a program for collecting and analysing water samples from the drinking water and regulated water supplied by the water supplier to the public.

A water sampling program developed by a water supplier must specify—

locations at which water samples will be collected within each water sampling area specified in the water supplier's risk management plan; and

how frequently water samples will be collected at those locations, which must include—

at least once per week in each water sampling area for a water sample that is tested for Escherichia coli; and

at least once per month in each water sampling area for a water sample that is tested for total trihalomethanes; and

at least once per month in each water sampling area for a water sample that is tested for its pH level; and

at least once per week in each water sampling area for a water sample that is tested for its turbidity level; and

the characteristics for which water samples will be tested; and

how frequently water samples will be tested.

In determining the locations to be specified under subregulation (2)(a), the water supplier must ensure that the samples collected at those locations will represent the drinking water supplied to the public from each water sampling area specified in the water supplier's risk management plan.

In determining the collection frequency to be specified under subregulation (2)(b), the water supplier must ensure that a sufficient number of samples are collected during the period of supply that will represent, so far as practicable, the drinking water supplied by the water supplier to the public during that period.

In determining the characteristics to be specified under subregulation (2)(c) and the testing frequency to be specified under subregulation (2)(d), the water supplier must consider—

how the characteristics and testing frequency will assist the water supplier to monitor its compliance with the drinking water quality standards; and

any chemicals or other substances that will be used to treat drinking water supplied to the public in each water sampling area specified in the water supplier's risk management plan.