Multiple infringement notices have been issued against three licensed plumbing contractors for another botched job at the state government's showpiece, Elizabeth Quay.
Channel Seven News reporter Jessica Page told 6PR's Gary Adshead on Wednesday the Building Commission had issued eight infringement notices over a sewerage pipe that had allegedly been laid the wrong way.
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The watchdog issued the infringements, while separate investigations still continue into just what has caused the BHP Water Park to fail and to be closed down almost continuously since the quay was opened on January 29.
"There's a huge problem with one sewerage pipe that has been laid the wrong way," she said.
"Fixing it could mean ripping up parts of Elizabeth Quay."
A triathlon at the quay in April had its swim leg cancelled due to "faecal bacteria" in the water.Â
Ms Page said the Metropolitan Redevelopment Authority had confirmed some cobblestones would have to be removed to enable the plumbing repair.
"They're furious, but stressed taxpayers won't foot the bill," she said.
"Contractors will have to meet the repair costs even if they have to fly replacement cobblestones in from China."
A spokesman for the Building Commission said infringements had been issued to the contractors for not advising specific plumbing work would be carried out at Elizabeth Quay.
"Their late notices of intention have now been received," he said.
The Building Commission is also reportedly investigating whether an interstate plumbing contractor was properly licensed.
The MRAÂ emphasised the infringements issue had nothing to do with the reasons behind the closure of the BHP Water Park.Â
In March the family of a young girl claimed she suffered an eye infection after visiting the water park.
The Building Commission spokesman said it would continue its investigation into whether plumbing work carried out at the water park met plumbing code standards.
"Details can't be provided during an investigation, but we are continuing to work with the MRA to ensure plumbing work is completed and maintained in accordance with required standards."