Utility workers in Millbrae were working to repair a water main Sunday that ruptured in the city earlier that morning, according to city officials.

The rupture was reported at about 6:30 a.m. in a residential area near the intersection of Helen Dr. and Magnolia Ave., Detective Rebecca Rosenblatt said.

A 12-inch-diamter water pipe burst but was isolated not too long afterward, according to Craig Centis, Public Works Supervisor for the city of Millbrae.

No evacuations were necessary, Rosemblatt said.

Crews stopped the flow of water just after 9 a.m. and were continuing to work at the scene, cleaning the mess of dirt and grime that resulted from the pipe bursting, according to Centis.

Centis said that local residents should not see any disruption in service and that everyone's Super Bowl parties should go off without a hitch.

The pipe was scheduled to be fully repaired Monday morning, according to Centis.

When asked what could've caused the pipe to burst, Centis replied that it was probably old.