ST. PAUL (AP) - Water officials in St. Paul have lifted a no-drink advisory following a large rupture in an underground water line, but they still advise residents to boil water before drinking it.

The water line burst early Saturday, releasing thousands of gallons of water. Because of contamination concerns, city officials warned residents against drinking tap water pending lab tests.

David Wagner oversees the underground piping system for the St. Paul Regional Water Services. He says tests have confirmed no chemical contamination, so tap water is fit for drinking. But because tests for bacteria take 18 hours, residents should boil their water as a precaution.

Wagner says the rupture appeared to be spontaneous, not a result of human activity. He says officials don't anticipate similar issues elsewhere along the pipeline.

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