City of Zeigler issued the following announcement on April 30.
The City of Zeigler Fire Department will be testing fire hydrants throughout the District beginning in the middle of May (scheduled to start May 14th) through late June between the hours of 8AM and 4PM. This testing process may cause your household water to become discolored. In the process of flushing fire hydrants, sediments may get stirred up and pass into your water system. If this occurs, please run your water until the discoloration disappears. Should you have any questions regarding this process, please contact Zeigler City Hall at 618-596-6475.
Original source can be found here.