The Lake in the Hills Public Works Department will conduct its semiannual hydrant flushing beginning Monday for hydrants west of Randall Road.
The first portion of the flushing process is expected to run through Friday. Flushing of hydrants east of Randall Road will begin Oct. 1 and run through Oct. 5.
The flushing program is a systematic procedure that will direct water flow from the water treatment plants and towers to the ends of the water distribution system.
This process is meant to remove any sediment that has collected along the bottom of water main pipes because of mineral buildup, which will improve the overall quality of the water.
The process also will enable village staff to identify necessary repairs and ensure all hydrants are in proper working order.
Notification signs will be placed throughout each flushing station at least 12 hours in advance, and they will remain until the process is finished.
The village is not expecting to conduct any hydrant flushing on weekends or after 6 p.m. on weekdays.
The flushing will cause sediment in the water mains to stir, which might cause temporary discoloration of water in residents’ homes. If that happens, residents are advised to run their taps for one to two minutes until the discoloration clears.
Residents also are advised not to do laundry while the hydrant flushing is underway, as the discolored water might cause staining.
For information, call the Public Works Department at 847-960-7500.