Sandpoint Beach is closed this week after testing revealed high levels of e.coli.
Swimming is also not recommended at six other beaches in the region.
E.coli counts of higher than 200 were detected at Belle River Beach, Seacliff Beach, Point Pelee Beach, Mettawas Beach, Colchester Beach, and Holiday Beach.
At Sandpoint Beach, e.coli counts are 1,000 and over.
Bacteria levels at these levels may pose a risk to your health.
Both Cedar Beach and Cedar Island Beach are open.
Each week the Windsor Essex County Health Unit tests the water at nine local beaches.
