The Winnipeg Regional Health Authority originally said in a press release the advisory was for an area east of the Red River.
The release said the advisory was being issued "as a precautionary measure as a result of two clusters of positive results involving the presence of E. coli, received earlier today."
"There has been no source of contamination identified to date; however, public health is proceeding according to provincial and national guidelines. These guidelines specify to issue the advisory as a precautionary measure, while investigating the possible causes."
At a press conference around 6 p.m. the city revised those concerns and has now extended the advisory across the city.
Winnipeg residents have been advised to boil all water for at least one minute before doing any of the following:
- Beverage preparation, such as infant formula
- Preparing food
- Brushing teeth
CBC will be updating this story as more details become available.