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Hydrant flushing begins Sunday, May 5

Post Date:May 01, 2019 2:00 p.m.

City crews are scheduled to flush the watermains throughout St. Louis Park starting Sunday, May 5, weather permitting. Hours of flushing will mainly be from 8 p.m. – 6 a.m. and should be complete by Friday, May 10.

Watermain flushing is done each spring to break loose normal mineral build-up inside underground mains. Crews flush the watermains by opening fire hydrants, so don’t be alarmed if you see water gushing from hydrants while a city truck is nearby.

The process will take a week to complete citywide – any one neighborhood or area won't be affected for the entire week. Once a watermain is flushed, city crews will move to the next one. Unfortunately, it's not possible to specify dates/times crews will be in specific neighborhoods, which is why a week-long window is published.

Although the final result is improved water color and taste, watermain flushing can temporarily discolor water due to loose iron particles. Iron naturally occurs in groundwater and isn’t harmful to your health. If you experience discolored water, take the following precautions:

  • Turn your water softener off (or set it to “bypass”) for the time period.
  • During this time period, don’t do laundry without first checking to see if your water is rust-colored. You can check water by running the tap. If it’s rust-colored, don’t run your washing machine until you’ve cleared the water. To clear your water, simply run your cold water tap in your laundry tub until it runs clear. Then you can go ahead and do the laundry. If your laundry is stained by the water during this time period, keep the laundered items wet and call public works at 952.924.2562 to have a chemical brought to you that will remove the stains.
  • Each morning during this time period, run the cold water tap to flush your household system of any discolored water sitting in the pipes. If tap water becomes discolored during the day, run the cold water tap until the water clears again. 

If you have any questions, contact public works at 952.924.2562.

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