Two Tiny Township beaches have been posted with swim advisories.
According to Simcoe Muskoka District Health Unit monitoring, both Woodland Beach and Jackson Park Beach have heightened levels of E. Coli.
At Woodland Beach, the geometric mean of samples collected from the beach was 392 E. coli per 100 millilitres, which exceeds the provincial standard of 200 E. coli per 100 ml.
Over at Jackson Park Beach, meanwhile, water samples collected on Tuesday showed 247 E. coli per 100 mililitres.
In Midland, the beach at Pete Pettersen Park remains posted with a swimming advisory as does Waubaushene Beach in Tay Township.
Every summer, the health unit collects water samples from public beaches between June and the Labour Day weekend through Simcoe and Muskoka.
They test the water samples for levels of E. coli bacteria. When elevated levels of E. coli are present in the water samples, the beach may be posted with an advisory warning indicating it is unsafe for swimming, or the beach may be closed.
Bacteria levels can increase in recreational beach water due to heavy rainfall, cloudy water, a large number of swimmers, a large number of birds, shallow water, wet sand, wind and high waves.
For more information about possible beach advisories or closures in the area, click here.