South East Queensland has some of the highest quality drinking water in the world, thanks to our effective water treatment processes.

Water undergoes regular and thorough testing through multiple water treatment processes carried out at Seqwater’s water treatment plants and within the water service providers’ networks to ensure drinking water quality meets the stringent standards outlined in the Australian Drinking Water Guidelines set by the National Health & Medical Research Council.

Seqwater is enhancing water treatment processes at its Mount Crosby and North Pine water treatment plants to deliver water quality benefits to communities in Ipswich, Brisbane, Logan, Moreton Bay and some parts of the Scenic Rim. 

The initiative is being undertaken in partnership with Urban Utilities, Logan Water and Unitywater.

We’re committed to keeping customers informed about key project developments. Due to supply chain impacts, construction materials are now expected in early 2026. The project team is reviewing the best commissioning window to minimise potential disruptions, with an expected delivery date of Autumn 2026. 

The upgrade will further improve and stabilise water quality, including during the summer months when water quality needs to be more closely managed within the South East Queensland climate.

A key result will be slightly increasing the pH level of water at the two water treatment plants from about 7.8 to about 8.4. 

Water will continue to be delivered within the Australian Drinking Water Guidelines and customers within the supply areas are unlikely to notice a change in their drinking water. 

Some customers who already treat their water or have specific water chemistry requirements may need to make adjustments to allow for the slight change in pH. Water service providers will provide further information to customers to help them decide what adjustments might be required.

To find out more about what this change might mean for you, please see this fact sheet or contact your local water service provider:

• Logan Water: www.logan.qld.gov.au/water 
• Urban Utilities: www.urbanutilities.com.au or watertalk.urbanutilities.com.au 
• Unitywater: What's in your water (unitywater.com)