Lambton Public Health detected high levels of E. Coli at Grand Bend's main beaches, as well as Canatara Park and Bright's Grove on Tuesday.
The health unit announced the areas were unsafe for swimming.
High levels of bacteria is a normal occurrence after heavy rainfall.
Severe thunderstorm watches and warnings were issued for the region on Monday.
An update posted on Wednesday said the Grand Bend beaches and Bright's Grove Beach were no longer posted.
The number of measles cases is growing in Midwestern Ontario.
Soybeans finished higher.
In a move to strengthen local democracy, West Grey Mayor Kevin Eccles announced today that he will delegate the strong mayor powers recently granted to him by the province back to the municipality’s elected Council and Chief Administrative Officer (CAO) wherever possible.
The 13-year-old girl reported missing on Thursday has been located safe.
Cardinal Robert Francis Prevost from Chicago has been named the new pope.
Just a day after Canadians observed the National Day of Mourning for workers killed, injured, or made ill on the job, a workplace injury in Mildmay, Ontario has reinforced the ongoing dangers faced by employees across the region.
