Fire Hydrant Flushing - Halls Station along John Brady Drive

Flushing is part of our Routine Maintenance Program. Fire hydrant flushing removes sediment from the water mains/pipes to maintain water quality, generates a turnover of water within the distribution system, and identifies adequate flow and pressure for fire protection.    





Why is flushing necessary?

Flushing water mains via fire hydrants is a standard practice in the water industry.  

  • Improves water quality by moving water throughout the distribution system
  • Verifies the proper operation of fire hydrants
  • Provides necessary data for the fire department
  • Removes sediment and rust that settles in the water mains.


How do you flush a fire hydrant?

Hydrant flushing is the quick release of water from fire hydrants. It’s a controlled procedure that is vital to the general maintenance of the water distribution system. LCWSA technicians are present during the flushing activity to monitor the flow and water quality.  Sometimes hydrant flushing may cause the water to temporarily appear rust-colored because the iron and mineral deposits that may be flushed from the system.


Is my water safe to drink /use after flushing?

Water can become discolored after flushing; however it is still safe to drink.   You can run COLD water for a few minutes until the water is clear.  Avoid washing light colored clothes until the water clears.  Sediment and rust can stain laundry. If your laundry does become stained, do NOT put it in the dryer.  Rewash clothes using a laundry aid for rust removal which is available at most grocery/home improvement stores.


Can I still use water during the flushing process?

Although there may be a decrease in pressure, flushing will not interrupt water service.  If pressure seems low after flushing, check your faucets and screens for trapped particles.


Tips for Minimizing Water Discoloration after Hydrant Flushing

  • Run the cold water tap until the water runs clear.  If you have a water softener and are experiencing discolored water, place the unit into regeneration or cleaning mode after hydrant flushing is completed in your area.

  • Remember rust colored water is safe, but it may stain laundry.  If this happens, keep clothes wet and treat them with stain remover before rewashing.



Thank you for your understanding and patience during this process. As always, please contact our office if you have any questions.




PDF icon 2020_hydrant_flushing.pdf1.87 MB