Hydrant Flushing Program

Why are we flushing fire hydrants?
Flushing is a proven method that discharges a large volume of water through the main and out the hydrant. During flushing activities, water quality is disrupted due to scouring of pipes and the removal of sediments.  This is a short-term event. In addition to improving the quality of water, this process provides Cottage Grove with the opportunity to assess the general condition of the hydrants. While we understand that this is an inconvenience to our customers, flushing provides beneficial, long-term water quality.

Will my water be shut off during flushing?
No. If you are without water contact us immediately.

Can I drink from the tap during hydrant flushing?
During flushing, it is possible you may receive discolored water. We ask customers to avoid using discolored water.  The water is safe from harmful bacteria, but unpleasant for consumption and use.  While it may not be visually appealing, it is safe to drink and continues to meet all federal and state drinking water standards. There are no health hazards associated with the discolored water.

What should I do if flushing is happening in my neighborhood?
The main impact of hydrant flushing is discolored water. Here is what you should do if hydrant flushing is taking place in your neighborhood:

• If possible, avoid using water while the hydrant flushing is taking place. By not taking water from the tap or running appliances that use water (dishwashers and washing machines), you can prevent discolored water from entering your household plumbing altogether.
• Do not do laundry while hydrant flushing is taking place. The discolored water can sometimes stain fabrics. Wait until water runs clear at the tap before using your washing machine. After your water clears wash a load of dark clothes first. **IF, your clothing becomes discolored as a result of hydrant flushing please contact Public Works to receive a special detergent.
• If you encounter discolored water following hydrant flushing, run the cold water taps throughout your home (bathroom sinks and tubs, kitchen faucets, etc.) for five to 10 minutes or until the water runs clear. This allows discolored water to work its way out of your household plumbing.
• If, after hydrant flushing, your water pressure or volume seems low, clean faucet screens to remove silt and mineral sediment that could be obstructing water flow.

For more information: If you experience water quality problems lasting more than four hours following hydrant flushing, we want to know and provide immediate assistance. Contact the City of Cottage Grove at 541-942-5501.