Residents in Canadian town have been left puzzled after bright pink water began flowing from their taps.
Locals living in Onoway, Alberta, were first affected by the pink water on Monday.
In a statement, Mayor Dale Krasnow said there was no public health risk but the town "could have done a better job communicating what was going on".
The mayor said it was the unfortunate side-effect of a common water-treatment chemical, potassium permanganate, which is used to remove iron and hydrogen sulphide from water. Officials said it got into the reservoir when a valve malfunctioned.
"The reservoir was drained, however some of the chemical still made it into the distribution system.
"While it is alarming to see pink water coming from your taps, potassium permanganate is used in normal treatment processes to help remove iron and manganese and residents were never at risk," the statement said.
The mayor said the town can learn from the incident to improve their communication skills.