UPDATE Wednesday, Dec. 28: A boil water advisory that went into effect on Christmas Day was lifted on Wednesday, Dec. 28 Forsyth County officials said in a news release.

"The [advisory] was issued after some customers experienced little or no water pressure on Dec. 25 due to a frozen pump station valve at the north high pump station," the release said. "Water quality tests have been completed and indicate the water is safe for consumption without boiling."

UPDATE Dec. 26: The boil water advisory issued on Christmas Day remains in effect, according to Forsyth County government officials.

In a news release on Monday, Dec. 26, officials said the advisories "can last 48 hours to allow for sampling before consumption without boiling."

UPDATE 6 p.m.: Forsyth County officials said crews have identified the cause of water outages and low pressure in north Forsyth on Christmas Day.

In a news release, officials said the outages occurred after a "valve that delivers water to the system located at the north high service pump station froze during the multiple days of continued below freezing temperatures." The valve has been repaired, and a boil water advisory has been issued for areas north of Hwy. 369.

"There was no break in the Forsyth County system and chances of contamination are low, however, a boil water advisory is in effect for water customers that lost water pressure completely, or feel that they had extremely low pressure, that are north of SR 369 (Matt Highway) from the Hall County border to the Cherokee County border," the release said. "These customers should begin boiling water for use."

Residents who lost water pressure are advised to boil water for at least a minute after reaching full boil before drinking, cooking or preparing baby food until the advisory is lifted.

"This boil water advisory is in effect unless notified otherwise by the Forsyth County Department of Water & Sewer via the County’s website, forsythco.com, and social media channels, to allow for water testing before consumption," the release said.

Forsyth County Fire Department officials said three tankers are in service and available at three locations as needed.

"Once the water from the tankers is used at a scene, the apparatus responds to a fire hydrant, refills, and returns to the scene, and the cycle continues until no longer needed," FCFD Div. Chief Jason Shivers said in a statement. "This type of event is the exact reason that we have this small fleet of supplemental apparatus."

Shivers said fire officials are working with the county, the county emergency management agency and county communications.

Areas of north Forsyth County are dealing with an apparent water main break on Christmas Day. 

In a news release at about 3:15 p.m. on Sunday, Dec. 25, county officials said crews are working to determine the location of the apparent break and that anyone with information on the leak can call the county 911 center at (770) 781-3087.

"Once isolated, crews will address the break to help restore water pressure to the area," the release said. 

Water-related emergencies can be reported outside of business hours and on weekends and holidays at (770) 781-2160.

This story will be updated.