Residents are asked that any ice, food, and beverages prepared with unsafe water must be discarded.
District administrator Mary Pfeiffer said Friday that Burke reached out to her on Wednesday and apologized by phone.
Retailers at the mall are looking to fill more than 200 full-and-part-time positions.
Moore Police Sgt. Jeremy Lewis says police are waiting until the 30-year-old man is conscious to arrest him in Thursday’s attack.
Burke spoke Friday at the annual meeting of the Wisconsin Association of School District Administrators.
The resident asked the man to see an ID but the man would not show one.
The 6-year-old Waters Elementary School student didn’t hear the announcement of the drill when he was in a bathroom.
Work plans to begin during the evening hours starting Monday, Sept. 29.
A decision earlier this month allowed the law to be implemented again.
The event is sponsored by the De Pere Area Chamber of Commerce.