Sandpoint Beach in Windsor is closed this week because of high bacteria counts.
The Windsor-Essex County Health Unit says E. Coli levels exceed 1,000 after conducting its weekly water testing.
Swimming is also not recommended at five other beaches including Seacliff, Colchester, Holiday, Mettawas and Point Pelee's North West Beach.
Mettawas also has a very high E.Coli count of 965.