From the City’s flood update page:
“A water main break under Squaw Creek drained all the water out of a water tower and dropped the distribution pressure to a dangerous level. Due to the possibility of contamination, the Ames Water Plant has shut down the water supply to the distribution system community wide effective 2:30 p.m.
Any water accessible at your home or business should be considered potentially contaminated. Any water used for consumption must be boiled.
Water pressure could be restored this evening or take as long as 24 hours. The water boil order could continue longer.”