Health Minister Lawrence Springborg says Queenslanders should not be alarmed by the discovery of Legionella bacteria in nearly half of the state's hospitals.
The Queensland Health audit revealed Legionella bacteria present in 105 of the state's 257 public and private facilities, including 60 positive test results returned from critical care areas.
The unprecedented audit saw every tap, shower and water system tested, and the department says immediate action was taken when a positive result was returned.
That included adjusting water temperatures, replacing fittings and flushing lines to get rid of the bacteria.
Areas have been cordoned off at the Ipswich and Charleville hospitals while remedial action continues.
Mr Springborg says the process means Queensland hospitals are cleaner and safer than ever.
"We have actually gone through, we have been responsible, we have actually tested it," he said.
"Not only that, there has been a process of where those systems have been cleaned as well.
"So I think it is probably fair to say we will have amongst the cleanest, if not the cleanest, hospital and health service water systems in all of the Australia."
He says there is no need for anyone to be alarmed.
"What it has done is identified that in 105 of those facilities there has been Legionella present," he said.
"But we said at the start that that would be the case, because Legionella is a background organism in the environment.
"We shouldn't be surprised when we find it in the water system in our hospitals, because it is also in the water systems of many homes and businesses around Queensland."
Queensland Health ordered the tests after a deadly outbreak of legionnaires' disease at Brisbane's Wesley Hospital three months ago.
The outbreak claimed the life of a 66-year-old man, while a woman in her 40s who was gravely ill with the disease remains in the hospital in a stable condition.
The incident prompted the hospital to close while its water systems were treated and sparked concern about whether other hospitals were at risk.
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