The Huron County Health Unit has posted no-swim advisories for some beaches.
Port Albert, Goderich Main, Goderich St. Christopher's, St. Joseph, Hay Township Park and Port Blake beaches have all been affected. The health unit will take additional water samples at the affected beaches before the start of the long weekend.
In Grey and Bruce, the health unit has posted a no-swim advisory for Lion's Head beach and it is closed until further notice.
The most recent tests from other beaches within Grey and Bruce does show the water is safe for swimming.