Air Scouring Program

Twice a year we run a program of maintenance and cleaning on our water mains known as air scouring.

Air scouring removes the natural build-up of sediment that occurs in water mains.

It involves the use of hydrants to flush compressed air and water through the mains to remove the natural build up of sediment.

Regular cleaning is an important investment in our water networks. It protects the condition and integrity of our water mains so we can provide high quality drinking water.

Air scouring underway in Epsom and Huntly until 26 July

There are new dates and times for planned water supply interruptions for customers in Epsom and Huntly as part of our current air scouring program.

Revised dates and times have been provided via letterbox drop. Impacted customers will also receive an SMS reminder the day before the scheduled interruption.

What to do before your interruption

We recommend you turn off the 'stop tap' at your water meter.
This is quick and easy to do and there are instructions below.
If you are not able to turn off your 'stop tap' for any reason, please do not use any water during the interruption.
Put some water aside and be prepared.
You should store enough water to use during the interruption. Consider topping up your kettle, put some jugs of water in your fridge, fill the sink, and pop a bucket of water next to the toilet (which can be used if you need to flush).

After the interruption

Your water will be safe to drink.
Air scouring can cause temporary changes to the look, taste, and odour of your drinking water.
If this occurs, run your taps for a few minutes until the water clears.

Epsom and Huntly Air Scouring Map

Click here for dates and times

If the water mains in your area are scheduled for cleaning, you will receive a notification telling you the day, time, and what you need to know.

To facilitate the cleaning program, you may experience an interruption to your water supply (typically around four hours).

While underway, the air scouring process can cause temporary changes to water quality.

The best thing to do is to turn off your 'stop tap' (see diagram below) located at your water meter for the duration of the cleaning process. Once supply has been restored, you can turn your 'stop tap' back on.

If you are unable to turn off your 'stop tap' for any reason off, we recommend you avoid using water during the air scouring.

Please phone us on 1300 363 200 should you have any concerns or if your stop tap is not working.

On the day of your water supply interruption, please store sufficient water for your needs. Water can be stored in containers in your refrigerator, in a sink, or in the bath.
When your water is off your toilet cistern won’t refill after you flush. You may want to fill a bucket with water which can be tipped into your toilet.