Hydrant-flushing is very important to the maintenance of the domestic water distribution system. Destin Water Users and the Destin Fire Control District routinely flush hydrants throughout our service area as required to:

• Improve water quality in the distribution system
• Maintain appropriate disinfection residual
• Resolve taste and odor issues
• Cleanout water mains following services and repairs
• Locate closed valves and weak flow areas in the distribution system
• Verify the proper operation of fire hydrants and valves
• Test hydrant flow rate & perform routine maintenance
• Confirm adequate flows are readily available for fire fighting

The time involved in flushing can vary from a few minutes up to several hours depending on the circumstances (i.e. size & length of main). You may encounter the following water conditions during or after hydrant flushing operations:

• A temporary drop in the water pressure to your home or business.
• Rusty, brown, or cloudy water.

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

Whenever a fire hydrant is opened, the water flows out at a very high rate (up to 1,300 gallons per minute) resulting in increased velocity within the main. 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 normally discharged out of the hydrant, but may be drawn into your home if you are running your water at the time of the flushing.

While there is no health hazard associated with discolored water, it can cause nuisance problems such as laundry discoloration. Whenever possible, avoid running the tap water in your home whenever you notice flushing operations in your immediate area- this will greatly reduce the potential for the discolored water to enter your home.

Should you notice discolored water in your home, here are some Helpful Hints to help you resolve the problem:

• First, open cold water faucets and let the water flow until it is clear- normally, bathtubs on the lowest floor of your home are the best place to move large quantities of water.
• If you notice discoloration in your hot water, it may be necessary to flush your water heater reservoir- make certain the cold water is running clear first!
• Once both hot and cold water are clear, the water is ready for normal use.
• Remember to inspect your faucet screens for trapped particles, and clean as necessary.
• Wash a load or two of dark-colored clothes first.

For additional information about hydrant flushing and water quality, please call DWU’s administrative office at 850-837-6146.