Info on Hydrant Flushing: 11/30 – 12/4

Hello Neighbors,

We will begin hydrant flushing operations on Monday, November 30th and continue throughout the week until Friday, December 4th. We always get a lot of questions regarding hydrant flushing. So, here’s some info from the folks at Northdome, including what to expect and what to do during the procedure.

Hydrant Flushing 101:


Why is hydrant flushing necessary?

It enhances water quality by removing sediments from inside the mainline and flushing them out through the hydrant; identifies malfunctions of the hydrant and related valves; helps determine weaknesses in the water distribution system; identifies inadequate water volumes and pressures in the mainlines and helps determine locations where flow pressures may require valve inspections.

Why does my water look rusty or cloudy after hydrant flushing?

When a hydrant is opened, the water in the mainline will flow out at a high velocity. This creates a scouring action in the pipe and dislodges fine sediment particles that have accumulated in the pipe. The fine sediment mixes with the water, turning the water a cloudy or rusty brown color. This mixture is discharged out of the hydrant.  Remember, after the hydrant flushing operation, run your hot and cold faucets to let the water clear before you use it.

What should I do when hydrants are being flushed in my area?

Mainly, avoid using the dishwasher, washing machine and don’t turn on the faucets (hot or cold). Wait until the operation is completed. If you are driving in the work zone where hydrants are being flushed, please drive carefully.

You may encounter the following conditions during hydrant flushing operations:

-A temporary drop in water pressure to your residence or place of business.
-Rusty brown, or cloudy water. (These conditions will subside after the flushing is completed.)

Helpful Hints to Remember:

-Flushing of water system main lines and water lines within your property improves tap water by removing dangerous contaminants.
-Do NOT wash white or light-colored laundry during the flushing operations

After the flushing operation is completed:

-Open the cold water faucets and let the water flow until it is clear. Turn off the faucets.
-Open the hot water faucets and let the water flow until it is clear. Turn off the faucets.
-When both hot and cold water are clear, the water is ready for use as normal.
-Check the faucet screens for trapped particles.
-Wash a load or two of dark-colored clothes first.

5 Replies to “Info on Hydrant Flushing: 11/30 – 12/4”

    1. Hi Marya,
      Just saw your question. Northdome is handling the flushing this time. They’ll be working overnight to minimize disruption. Starting at 9pm tonight. Timing depends on a few factors, but based on past experience they should get to N. Franklin late Tuesday or early Wednesday. Be on the lookout. I wish I could be more definitive. Hope this helps!

Leave a Reply