Drakesbrook Weir closed amid alarm bells over potential amoeba similar to brain-eating bug naegleria fowleri

The shire of Waroona has urged the community not to swim in Drakesbrook Weir after a species of amoeba closely related to the infamous brain-eating naegleria fowleri was detected in the water.

The shire announced the detection of the naegleria amoeba on Monday which came from routine water checks.

The shire is now working to rule out the presence of the deadly naegleria fowleri.

This is the third time the weir has been closed this year because of amoeba risks, having also been closed in January and April.

The shire said if anyone who had recently swim in the weir and submerged their head was feeling unwell or was concerned, they should consult a medical professional.

The amoeba thrives in warmer stagnant water so as temperatures begin to rise, swimmers should take caution when entering untreated water bodies.

The shire has put up warning signs around the weir to inform people of the health risks.