Water System Flushing

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Water flushing in progress

Water flushing in progress

The City of Kelso will be flushing water mains in North Kelso from April 1 through May 10, 2019 from 8:00 p.m. to 12:00 a.m. Monday through Thursday.  Advisory signs will be posted in the areas of flushing.


System Flushing is performed periodically to ensure optimal water quality. It is an integral part of the City of Kelso’s effort to provide clean, clear and constant drinking water to the citizens of Kelso.

 What should I do while flushing is happening in my area?

Avoid using tap water, especially by running the washing machine or dishwasher. Wait until flushing is done.

What Should I do when flushing is done?

If you used your tap water during flushing, water could appear cloudy or discolored. This is only a temporary effect and will clear out soon.

If you encounter discolored water, shut the tap off and wait several minutes, then run cold water thru the bath tub or outside faucet for a few minutes. DO NOT run hot water to prevent discolored water from going into your hot water tank. If the water is clear, it is okay to use. If not, wait a few more minutes and repeat the process.

Why is system flushing necessary?

System flushing enhances water quality by flushing sediment from water mains and verifies proper operation of hydrants and valves.

Why is the water discolored?

When a fire hydrant is opened, fine sediment particles are flushed out at high speeds, which could cause discolorization. Rest assured, there is no health hazard associated with discolored water.

What should I do if I have a question or concern?

You can fill out a Citizen Request Form or contact Devin Mackin, Water/Sewer Supervisor, by phone: 360-957-2212 or by email: dmackin@kelso.gov