Major water projects

Information about our major water infrastructure and research projects is available below.

Chlorine dosing of water supply during hotter months

Recent events in South East Queensland have highlighted the need for effective disinfection of drinking water.

A small amount of chlorine is needed in the water supply to make sure that it stays disinfected. During the summer months, as the water in our network warms up, we add chlorine at strategic points around the city. This helps make sure that the water supply remains safe to drink for our community.

At these times, some residents may notice a slight chlorine odour and taste in their water. This can be removed by putting a jug of drinking water in the fridge overnight.

The level of chlorine in our water network is kept well within health guidelines and is regularly monitored to make sure it is lower than required under the Australian Drinking Water Guidelines.

If you use water for special purposes, like an aquarium, you should take measures to allow for changes in chlorine levels over summer.

For more information or if you have any concerns, please call us on 07 3412 3412 or email us at

Logan South Wastewater Treatment Plant B

In 2018/2019, we started to look for potential sites for a modern sewerage (wastewater) treatment facility in Logan. This facility is needed to service new developments between Park Ridge and Yarrabilba in the coming years. The planned facility is currently called Logan South Wastewater Treatment Plant B (Logan South WWTP B).

Current status

At the Ordinary Council meeting of 16 April 2019, Council selected a final site for the Logan South WWTP B. The site is at Pleasant View Road in Chambers Flat.

The site was considered the most suitable location for a modern wastewater treatment facility due to:

  • the availability of flood-free land
  • its low impact on the community and environment compared with other proposed sites
  • its proximity to the Logan river.

The project is currently in the early planning phase. 

Community consultation

In early 2020 we will call for nominations from members wanting to join a Community Reference Group. The group will inform the future development of the Logan South WWTP B.

To register your interest, please email

Information materials

Frequently asked questions

More information

If you have any questions about the Logan South Wastewater Treatment Plant B project, please phone Logan Water Infrastructure Alliance’s community engagement team on 07 3412 9609 or email

Cedar Grove Environmental Centre

Council’s Logan Water Infrastructure Alliance is currently constructing the first stage of a state-of-the-art sewerage (wastewater) treatment plant in Cedar Grove.

This facility will provide essential services to the growing community in the Queensland Government’s Greater Flagstone Priority Development Area (PDA).

Under the Queensland Government’s Shaping South East Queensland Regional Plan 2017, Logan City’s south west region is identified as a major hub for residential, commercial and industrial development. 

Current status and key activities 

Construction of stage one started in September 2018 and is due for completion mid 2020.

December 2019 Key activities 

Week ending Activities Equipment expected

6 December 2019

Please note:

No construction activities will be undertaken between
21 December 2019 and 5 January 2020.

• Installation of electrical equipment on structures
• Installation of mechanical equipment on structures
• Construction of concrete road around structures
• Continuation of construction of structures
• Buildings fit out
• Offset planting

• Excavators
• Water carts
• Concrete pump
• Frequent truck movements
• Air compressor


Information materials

Community Reference Group

A Community Reference Group is operating during the detailed design and construction phases of the Cedar Grove Wastewater Treatment Plant. For more information please refer to the Terms of reference (PDF 584 KB). The group is not open to new participants.

More information

Greater Flagstone PDA

For information about Greater Flagstone, please visit Department of State Development, Manufacturing, Infrastructure and Planning (DSDMIP) - Greater Flagstone of contact DSDMIP.

Cedar Grove Wastewater Treatment Plant – Stage 1

Logan Water Infrastructure Alliance
Phone: 07 3412 9609