Don’t panic. Cloudy water coming out of the faucet occasionally is normal, according to the Frankfort Plant Board.

A reader asked why FPB tap water is sometimes cloudy and whether it is OK to use. FPB spokeswoman Cathy Lindsey said that cloudy water is “normal in most water systems.”

“We do suggest, however, if it is more than cloudiness or a persistent problem, to let us know and someone may need to come check the line,” Lindsey said.

According to the U.S. Geological Survey, cloudiness in tap water may clear up in a few minutes as the faucet runs. The cause could be high water pressure. The condition has to do with tiny air bubbles and is completely harmless, the Geological Survey said. It recommends letting the water sit in an open container until the bubbles go away naturally.

In cold weather, cloudy water can occur because “the solubility of air in water increases as water pressure increases and/or water temperature decreases,” the Geological Survey said. During the cold, water warms up as it comes into homes. Water coming out of the tap loses pressure and may also create cloudy water.

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