Water Line Flushing Program

What is flushing?
When will flushing be done in my neighborhood?
Why are we flushing?
Is flushing a waste of water?
How will you be affected?
If you are experiencing discolored water.

What is flushing?

Each fall the Department of Public Utilities begins its comprehensive unidirectional flushing (UDF) program throughout the County. The goal of this program is to ensure water quality is maintained at its optimal level and to properly maintain the County’s water distribution lines. Flushing is a process by which water is moved through a water pipe at a high velocity so that a scouring action is created. Water is then discharged through a hydrant which in turn removes any material build-up from the pipe. The material removed from this process is harmless and requires no special treatment. Use of this flushing technique is critical to the maintenance of water quality and your water system.

When will flushing be done in my neighborhood?

See the Flushing Schedule for dates flushing will affect your neighborhood. Note that these dates are approximate. You will know that we will be flushing lines in your area when the flushing signs (see picture) are displayed in your neighborhood. These signs will be posted near major intersections before flushing begins. We will post these signs for a few days prior to and during the flushing period noting the exact time frame you may be affected. Flushing will normally occur between the hours of 7:30 a.m. and 3:30 p.m.

Water service should not be interrupted. If the water appears discolored we recommended that you give it a few hours to clear up then run your cold water faucet for a few minutes to make sure that the water is cleared.

The County has been conducting the annual fall flushing program for 7 years now and the program has resulted in very few complaints. Complaints about water quality are monitored and have actually decreased, because this program keeps the water mains scoured clean.

Further updates will be made to the flushing schedule on a bi-weekly bases.

Why are we flushing?

Because water mains are sized to allow adequate and safe flows for fire protection, water typically is moving through the underground pipes at less than 2 miles per hour. This slow movement allows mineral deposits, to build up and accumulate in pipes over time. The buildup can restrict water flow in the pipes and contributes to corrosion and water color problems.

Periodic flushing of water pipes removes the mineral deposits which helps maintain our County's infrastructure and assures consistent high quality water.

Is flushing a waste of water?

No! The amount and cost of water used in flushing is a small price to pay compared to benefits of assuring the quality of your water and maintaining our infrastructure.

How will you be affected?

You probably will not even be aware that flushing is taking place in your neighborhood. Flushing is generally conducted between 7:30 a.m. and 3:30 p.m., Monday through Friday. Select hydrants in each neighborhood will be opened for water pipe flushing. While the hydrants are open, the homes on that block may experience discolored water or a small drop in water pressure however; your water service should not be interrupted. If you have no water pressure please notify Public Utilities at 365-6024 as soon as possible.

If you are experiencing discolored water.

Should a reddish, yellow or brown tint the water appear, do not be alarmed. It is recommended you do not use the water or do laundry for about two hours. After you have waited, run your faucets for a few minutes to make sure the water is clear at which time you resume normal water use.

If the water does not clear within a few hours, please notify the Department of Public Utilities anytime at 365-6024.