Hydrant Flushing Notice: The City of Calais will be flushing hydrants throughout October and November between 8:00 AM and 3:30 PM. Residents may experience temporarily discolored water and lower pressure during this time. Please avoid doing laundry when water is discolored and run your tap until clear if needed. Questions? Call 454-2760 or 454-2521 ext. 3.