Oakland water main break shuts off supply to 100 homes

Did we say busy day? EBMUD Crews working earlier this evening to shutdown main break at Park Blvd and 7th Ave. in #Oakland. pic.twitter.com/5FxxjzM6y2 — EBMUD (@ebmud) June 17, 2018

A water main from 1930 broke Saturday night in Oakland, shutting off the supply to roughly 100 nearby homes, officials said.

The pipe rupture happened on Seventh Avenue near Park Boulevard, said Alison Kastama, a spokeswoman for the East Bay Municipal Utility District, which was working to fix the pipe and restore service late Saturday.

The 12-inch cast iron main pushed up some asphalt when it broke that will also require repairs, she said.

Adjacent businesses and homes didn’t appear to be damaged, Kastama said. Crews managed to limit the initial gushing flow of water to a small stream.

The cause of the rupture wasn’t clear, but Kastama said the pipe’s 88-year age probably played a role. She said water service may not be restored until early Sunday.

Kimberly Veklerov is a San Francisco Chronicle staff writer. Email: kveklerov@sfchronicle.com Twitter: @kveklerov