The northeast Iowa town of Tripoli is advising its residents to boil their tap water before using it for drinking or cooking.
The Waterloo Cedar-Falls Courier reports that the boil advisory was issued Friday afternoon. It follows a weather-related problem in the Tripoli water supply distribution system.
Officials say all water to be used for drinking or cooking should be boiled for at least one minute, then cooled. That includes water used for making ice, brushing teeth and food preparation.
The advisory is in effect until further notice.
Boiling kills bacteria and other organisms in the water.
Officials say the town's water is safe for bathing and showering without boiling first.