WILLMAR — Fire hydrants in the city of Willmar are being flushed by the Willmar Municipal Utilities Water Department crews for the next several weeks.

The city has about 1,500 public and 500 private fire hydrants that the crews flush every spring and about half in the fall according to Scott Schultz, Water Department foreman.

The department flushes out the fire hydrants to test the flow of water for future fire use and increase the velocity of the water through the water main, Schultz said. Increasing the velocity through the water main picks up naturally occurring sediment, like iron and manganese, that might have settled out of the water which in turn helps to improve local water quality.

When crews are flushing the fire hydrants, area residents may notice low water pressure that will return to normal once they are finished.