Staff at the hospital sounded the alarm on Thursday morning that the drinking water tasted and smelled strange.
Now, samples have been taken from the water. The answers are expected on Friday, writes Region Norrbotten in a press release.
For the time being, you are not allowed to drink tap water, not even if it is boiled. However, the water can be used for showering and cleaning.
There is no information that anyone who has drunk the water has become ill.
What lies behind is unclear, but according to the region, there are no signs of sabotage or external influence.
The hospital management has gone into reinforcement mode.
Currently, it is unclear whether operations will be performed as planned. However, all dialysis treatments have been cancelled for the time being, and all dental care treatments have been cancelled until Monday morning, writes the region.
A reserve tank with drinking water has been transported to the hospital, writes Piteå-Tidningen.
