Officials at Atlanta's Hartsfield-Jackson International Airport advised travelers to avoid drinking water from the airport's water fountains and faucets out of an abundance of caution on Friday.

In a series of tweets published Friday morning, the airport cited a temporary boil-water advisory from the city of Atlanta for the warning and urged travelers to avoid ice and coffee machines as well.

Due to temporary water boil advisory from City of Atlanta & out of abundance of caution customers should only consume bottled water (1/3)

— Atlanta Airport (@ATLairport) July 7, 2017

... & should not drink from airport water fountains/faucets/coffee machines, or use ice from ice makers until further notice. (2/3)

— Atlanta Airport (@ATLairport) July 7, 2017

We are working with @ATLWatershed to resolve ASAP & will send updates as we get them. Thank you for your patience. (3/3)

— Atlanta Airport (@ATLairport) July 7, 2017

The advisory went into effect Thursday and the city was expected to receive water testing results at some point Friday, according to The Atlanta Journal-Constitution.

"Customers in these areas should boil water for one minute past a rolling boil before using it for cooking, drinking or brushing teeth," the advisory states. "Infants, the elderly and those with immune deficiencies should be particularly careful."

"The boil water advisory is a precautionary measure for consumption," a Department of Watershed Management spokeswoman told the Journal-Constitution in an email.

"We have not deemed there to be any contamination, but out of an abundance of caution we have issued a boil water advisory per protocol."

Boil-water advisories are typically put in place for at least 24 hours.

The airport confirmed the advisory had been lifted Friday afternoon and said the airport had returned to normal operations.

The water boil advisory has been lifted and the airport is back to normal operations. Thank you for your patience!

— Atlanta Airport (@ATLairport) July 7, 2017

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