A water pipe burst along the main route to Shelter Island, creating an outage for businesses and hundreds of customers as city water officials continue repairs.
The 12-inch diameter, concrete water main broke around 9 a.m. on Shelter Island Drive just before the roundabout.
Water was restored to businesses as of 5:30 p.m.
The water main break left nearly all of Shelter Island without water. Hotel workers were scrambling to rush in port-o-potties and use backup water supply systems.
Many hotels had to shut down restaurants. Humphreys Restaurant, for instance, was forced to relocate some of its business meeting locations.
One guest staying at the Bay Club Hotel for a technical conference said he had to change his plans due to the water shutoff.
"We were planning to have a banquet dinner at the hotel and fortunately we were able to change the location to the local yacht club," said Frank Renkshaw.
Another tourist was trying to make the best out of it.
"Our last day here in San Diego," said Lene Curtis. "We've had a great time so we're trying to not let it affect us, and now we're just heading to Old Town to let us continue on with our day."
While the City of San Diego Public Utilities Department worked on repairs, business were without water.
The customers affected include two hotels, some restaurants and the marina.
Officials said the problem was a pipe connector or collar that corroded and were working Friday afternoon to replace at least 15 feet of the old concrete pipe.