Canada Summer Games moved venues for its swim competitions Saturday after E. coli levels registered "slightly" too high at Birds Hill Provincial Park.
The 5,000-metre swim was quickly relocated to the Pan Am Pool on Poseidon Bay in Winnipeg.
The race covers five kilometres which means competitors will cover 50 laps of the Pan Am pool.
The races kicked off with the men's competition at 9 a.m., followed by the women.
The park pulled out after routine tests showed water readings that were a little above acceptable recreational levels.
Canada Summer Games officials then changed venues after consulting the province's health officials.
As Host Society, our first priority is the safety and well-being of the athletes," said Jeff Hnatiuk, president and CEO of the Host Society, in a release. "Out of abundance of caution, we made the decision along with Swimming Canada to move the five-kilometre open water swim to Pan Am Pool under the recommendations of Manitoba Health and the Games' chief medical officer Deborah Hill."