Qld Opposition discusses use of Moonie to Brisbane pipeline for temporary Toowoomba water solution ...

Excerpt from Hansard:

Hon. Hobbs - NPA: Toowoomba also has other options because of the enormous coal seam gas supply in that region. Queensland Gas Co. will have 100 megalitres of water per day available from its gas fields alone. The Toowoomba water supply requirement is somewhere in the vicinity of 12 to 14 megalitres a day. Many times the required amount of water is sitting out there not very far away. There is also an oil pipeline from Moonie that is about to be decommissioned. It goes past Toowoomba’s doorstep and into Brisbane and it is being decommissioned. Water could be run through it. We had a briefing from Santos before lunch.
...

The Moonie pipeline is about to be decommissioned. It is a 10-inch pipeline and it has been renewed for about 70 kilometres from Moonie towards the east. At present they run about 2.4 megalitres a day through it when it is worked under high pressure. It is an old pipeline. Maybe we would not have as much pressure going through it, but we could certainly get water to Toowoomba, for instance, via that line.

That is only temporary. It will not be a solution. Around 18,000 people a day would receive this water. I am calling on the government to put together a working party to talk to Santos. Santos is decommissioning the line and is happy to talk about any arrangement that can be reached. Down the track, a consortium could put a liner in that pipe if there are issues of it needing to be repaired. In fact, more water could probably go through a poly type liner than the existing steel pipe. There are definitely options. Down the track, the obvious course would be to provide water via towns such as Miles, Chinchilla and Dalby into Toowoomba. Then there could be a pipeline down to Brisbane from there. It is downhill with a 2,000 feet fall. The water would easily go down such a pipeline.

See - Hansard - 15 May 2008 - Page 1735-6.