Durham Health said test results for the week of July 29 indicate that five public beaches are posted as unsafe for swimming.
Beaches are posted as unsafe for swimming when elevated levels of E. coli exceed the provincial standard of 200 E. coli per 100 ml of water.
The Health Department reminds the public not to swim in beach water for at least 48 hours after heavy rainfall, as bacteria levels can increase due to run-off.
*Kinsmen Beach (Palmer Park), near Platten Island, has a blue-green algae advisory. People can protect themselves and their pets from blue-green algae blooms by not swimming or playing in areas where water is discoloured or where foam, scum, or mats of algae on the water’s surface are present. Consuming fish from areas where mats of algae are present is also not advised.