If you were thinking about heading out to a Toronto beach for a swim this weekend, you might want to check on its water quality first.

Centre Island Beach is reporting an E. coli count of 123 as of June 10, which means swimming in its water is currently deemed "unsafe."

The swimming conditions, which are directly based on the E. coli count in beach water quality samples, are evaluated every 24 hours. The city begins collecting water samples from supervised beaches across the city in June and doesn't stop until Labour Day.

Toronto Public Health also posts signs at the locations themselves to warn against swimming when levels of E. coli reach 100 or above.

As of Friday afternoon, all other city beaches have been deemed safe to swim in.