IT'S no secret.
The water quality along Oxley Creek is among the worst in Brisbane.
Urban growth, sewage treatment plants, sand extraction and stormwater pollution have increased pressure on the waterway and its surrounding environment.
The waterway's toxicity levels, including Ecoli readings, still remain extremely high.
Its condition is now so poor the creek is assessed each year by Healthy Waterways and consistently given the lowest grade - an F.
The lingering issue has prompted Lord Mayor Graham Quirk to make it a focus for his re-election campaign.
With elections only three weeks away, Cr Quirk revealed his plan to tackle the city's polluted creeks head on if returned as Lord Mayor.
He announced $2 million would be spent on filtration systems that trapped silt, debris and other contaminants in a confined area in the creek system.
Cr Quirk said after a century of degradation, repairing the polluted creeks would not be a quick and easy fix.
"It's another step in a long recovery for our waterways but I have the patience and determination to see this through," Cr Quirk said.
Chief executive of the International Water Centre, Mark Pascoe, was present during the announcement and said the project needed to happen.
"It's important for the council to see a rating of F as a critical issue and that something needs to be addressed," Mr Pascoe said.
"An engineered filtering system like this is crucial and will help Brisbane waterways get its kidneys back."
But not everyone was swept away by Cr Quirks announcement.
Labor lord mayoral candidate Ray Smith said the creek filtration systems were something the council used to do as a basic core service but were cut under the current council administration.
"The Lord Mayor's announcement is simply restoring a service his administration never should have stopped," Mr Smith said.
"If we invest in our creeks and catchments and improve their health, we get so many other things right as well."
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