Crews were dispatched to the 8900 block of Regents Road near Costa Verde Center mall.
While crews were working on the 10-inch-diameter recycled water pipeline break, they discovered another break on a 16-inch-diameter water pipeline.
That pipeline was shut down around 9:40 p.m., leaving “500 to 600 residents without service,” according to San Diego Public Works.
As of 6:30 a.m. on Wednesday, Oct. 10, residents were once again able to use their services. The recycled waterline is still being worked on.