Updated: 9:44 a.m.
The boil water advisory for Andover has been lifted, according to city officials.
On Sunday morning, about 12,000 Andover households were asked to boil their tap water before they consumed it.
Andover Public Works Director Dave Berkowitz said the problem — with about 2/3 of the city's water system affected — was not caused by storms.
"We had a mechanical failure within our water system which impacted the system and reduced the pressure down to a point where we needed to put together a boil water advisory for certain locations and residents within the city," Berkowitz said.
The order has now been lifted. The city advises that residents run each cold water faucet for five minutes, or until the water is noticeably colder.
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