Officials have warned against swimming at the Merrickville Beach.
Southeast Public Health issued an advisory with swimming not recommended.
Officials say high levels of E.coli bacteria were detected in the most recent water sample results.
They add that swimming may increase your risk of developing minor skin, eye, ear, nose, or throat infections or stomach illness.
If you choose to swim during a swimming advisory, officials say you should avoid putting your head under water or swallowing the water.
