Water Main Flushing. The City of Middleton will be flushing water main in the Bishops Bay neighborhood; 4800 Blk. of Crystal Downs Way. and Saint Annes Dr. on Friday, November 6th , between 11:00 and Noon. A slight discoloration of the water may be noticed during this time. If you notice a rusty color in the water, running it for a few minutes usually helps clear it up. Thank you for your cooperation.