The water main break sent thousands of gallons of water into the streets flooding yards and garages and disrupting water service to nearby hospitals and dozens of houses and apartments.

The ruptured 18-inch cast-iron pipeline began sending water surging out of buckled asphalt in the 2600 block of Meadow Lark Drive shortly before 4 p.m., according to police and the San Diego Water Department.

Rady Children's Hospital was affected but has back-up water supplies and had water service restored by 5:30 p.m according to a hospital spokesman. Also affected were Sharp Memorial, Sharp Mary Birch and Sharp Mesa Vista Hospitals. The disruption to those facilities was ongoing as of 6:30 p.m., according to spokesman John Cihomsky. A spokeswoman said there has been intermittent water service at the facilities because of low water pressure due to the water main break. She said the hospitals were operating as normal and were continuing to accept patients. All the hospitals have emergency stores of water, and none reported any adverse effects to patient care.

The nearby county juvenile court and detention center also was affected to some degree, SDWD spokesman Arian Collins said. A representative for the Kearny Mesa Juvenile Detention Facility says it is relying on bottled water and that more drinking water and portable toilets were on the way. 

City repair crews were working on the broken main and investigating the cause of the rupture.