The Rock County Courthouse was closed for the day after a chemical incident.
The Rock County Sheriff’s Office said that a facilities management worker was mixing chemicals to treat water for the building’s air cooling system at about 8:30 a.m. Friday when the fire alarm activated.
Deputies began evacuating people and the Janesville Fire Department’s hazardous materials team responded. The building was closed about an hour later.
News with a little more humanity
WPR’s “Wisconsin Today” newsletter keeps you connected to the state you love without feeling overwhelmed. No paywall. No agenda. No corporate filter.
A worker exposed to the chemical cloud was taken to the hospital and one deputy was treated at the scene and released.
© Copyright 2025 by The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
