Water main breaks in South San Francisco

A water main broke Friday morning on Elm Street in South San Francisco, flooding several cars and forcing the evacuation of six houses, officials said.

Scroll down for video of the water main break.

The water main, a 12-inch line connected to a larger 60-inch line, broke on Elm Street between Park Way and Tamarack Way around 9:45 a.m., according to Charles Sheehan, a spokesman for the San Francisco Public Utilities Commission.

South San Francisco residents  were evacuated from their homes while the structural integrity of the homes was inspected. The residents were allowed back into their homes in the afternoon, officials said.

The water flooded several cars and forced the evacuation of six homes. Repair crews and investigators were on scene around 10:30 a.m. and water flow was shut off shortly before 1 p.m.

Repairs were underway Friday afternoon and the pipeline was back in service. The cause of the break remains under investigation, but Sheehan noted that both the 12-inch and 60-inch line were recently upgraded.

The pipeline is one of several that deliver drinking water to northern San Mateo County and San Francisco, Sheehan said. Water service was not interrupted by the break.

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