The Canadian city of Winnipeg is under a water boil advisory after testing found E. coli and other bacteria in the water supply.
The city is rushing additional tests to determine whether the results are in error.
“Hopefully we will find out that these were false positives,” said Winnipeg Mayor Brian Bowman. “but we do need to be cautious.”
There were no reports of water-related illnesses on Wednesday morning.
The Winnipeg Regional Health Authority (WRHA) said in a statement the advisory was a “precautionary measure” due to two clusters of positive test results involving E. coli.