The school was evacuated around noon on Thursday, officials said.
The utility said it is flushing the system to eliminate the potentially contaminated water.
Pike is scheduled to be the first woman executed in Tennessee since 1819.
The meeting will begin with an in-person informational open house from 5:30 to 6:30 p.m. and will be followed by a formal meeting.
Hearing for execution of Christa Gail Pike, Day 3 - Closing Arguments