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Front Range at dusk from 88th


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Annual fire hydrant testing and flushing May 25 - July 3

Post Date:05/13/2020 2:04 PM

Louisville Public Works Operations Division will begin annual water main flushing on Monday, May 25, 2020. Testing and flushing will be done on weekdays between 8 am and 4 pm through Friday, July 3. 

The area of work for this year’s testing and flushing includes the western side of Centennial Drive from Dogwood Circle to South Boulder Road. Starting at South Boulder Rd from HWY 42 to Via Appia south to Campus. The Operations Division will begin in the north of city and move south during the five weeks of the project.

Area of hydrant flushing

What is flushing and testing?

hydrant flushing

City utility staff has implemented unidirectional flushing (UDF) guidelines developed by the American Water Works Association, which minimize the potential of rust and sediment reaching water customers.  The flushing operation scours and cleans rust and sediment from the water mains and may temporarily discolor the water in the area being flushed. 

Your water

The entire process will take approximately five weeks, but should only affect each residence for one day. Residents are encouraged to avoid washing clothes between the hours of 8 am to 4 pm (on weekdays) when crews are in the area. If your water appears rusty, running a garden hose or sprinkler system for a few minutes will normally clear it up.  If discoloration continues or if you have any questions, please call the Louisville Public Works Operations Division at 303-335-4750.

Thank you for your cooperation during this important maintenance process.

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