The Coon Rapids utilities department began their springtime flushing of fire hydrants in the city this week.
If crews are working in your neighborhood, you may experience some water discoloration, but this does not affect the safety of the water. It’s best to avoid doing laundry until the discoloration has disappeared.
"Some hydrants take 15 minutes, some hydrants take five minutes," said utilities superintendent, Shawn Nelson. "What we're doing is cleaning up impurities that were in the water from over the winter, Water gets kind of stagnant, we can get some iron, magnesium and iron that’s in the water, that's that brownish tint that you see in the water."
Each year, utility crews flush half of the city's hydrants. Using Highway 10 as a dividing line, this year the focus is on those hydrants which fall on the north side of the highway.
"We're going through roughly a little over 1,600 to 1,700 hydrants," Nelson said.
They use a systematic approach when it comes to flushing hydrants. Starting near the city's east water treatment plant they'll move from the hydrants on larger water lines to smaller ones.
"Cause we want to pull that water, that clean water out to those sources on the outer reaches of the city," Nelson said.
Due to the number of hydrants, the work will take crews through next week to get the job done. The city performs the annual maintenance to maintain its high water quality. And to residents who may notice brown water running from their tap, Nelson offers this advice.
"If you ran it for five minutes or something, ten minutes it should clean up. It just depends upon if you maybe were using your service at the time and it pulled that water when the guys were flushing and maybe it got a little brown water. It needs to clean out of your service line coming in and with a small tap on your faucet it might take a little longer."
See the 2021 Hydrant Flushing Map