News For You

Posted on: April 5, 2016

Lombard Public Works announces spring hydrant flushing program to begin April 11, 2016

fire hydrant.jpg

Lombard Public Works crews will be performing the annual spring fire hydrant flushing program beginning the week of April 11, 2016. Workers will flush more than 2,700 hydrants over the course of a six week period.

The fire hydrant flushing program is a vital part of the Village’s water pumping and water distribution system maintenance schedule. Crews will be concentrating their efforts in this program for approximately five to six weeks.

During hydrant flushing, each hydrant is thoroughly inspected and operated. Flow readings are taken to evaluate system capability to provide sufficient water supply in which low flows may indicate a water main valve is closed or not operating properly. Large volumes of water are moved through the water mains during flushing which scours the internal walls of the pipes and pulls fresh water into the distribution system. The water pumping stations also benefit from hydrant flushing. As large volumes of water are flowed through the system, the water storage tank levels will fluctuate more than they normally do. This allows the water operators to check Village’s pumping stations and monitor their ability to respond to pressure fluctuations and gain an overall synopsis of system performance during peak usage.

During hydrant flushing, residents may experience the following conditions: a temporary drop in water pressure when crews are in the area, water may be rusty (a reddish color caused by iron deposits) and cloudy or “milky” water (caused by undissolved oxygen in the water that will dissipate within a few minutes). These conditions do not affect the quality and safety of the water, only appearance.

If you experience discolored or cloudy water, shut off the water and wait several minutes, then run the cold water for a few minutes or until the water clears. Avoid doing laundry during hydrant flushing as white clothes may become stained if the water is not properly cleared first. Wash a load of dark clothes first before doing a load of white clothes. If water pressure or flow seems low, check the faucet aerator screens for sediment. When you see a flushing crew in your area, avoid running tap water and washing clothes until the flushing is completed. Drive carefully around any open running hydrant, watch for Public Works personnel and keep children away from the open hydrants and flushing crews.

Questions regarding hydrant flushing should be directed to the Public Works Department at (630)620-5740, or via email at Please visit for more information including a video and a map of the spring hydrant flushing program.

Additional Info...
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