The Village of Arlington Heights will begin hydrant flushing on Monday, April 27, at 12:01 a.m. and continues 24 hours a day for approximately 10 days. There will be no hydrant flushing on Saturday or Sunday. If necessary, hydrant flushing may be extended until May 8.
Various neighborhoods in the Village will be affected on different days by hydrant flushing operations. When hydrants are flushed in your area, please test the cold water before all clothes and fabric washing. If any discoloration is observed, stop using all water until the discolored cold water clears, which is usually within one or two hours.
Zone Map [PDF]
https://www.vah.com/assets/1/public_works/HydrantFlushingSchedule2015.pdf
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hydrant flushing, Arlington Heights