WEST HOLLYWOOD (CBSLA.com) — Crews Monday were working to repair a massive hole in West Hollywood caused by a water main break.

Approximately 10,000 gallons of water gushed from a 12-inch pipe on Formosa Avenue at Santa Monica Boulevard around 4 a.m. Sunday.

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Streets were flooded and cars in a nearby parking garage were submerged in knee-deep water.

Water service was shut off to 27 customers for most of the day and was restored by 6:45 p.m., according to the Los Angeles Department of Water and Power.

A massive hole was left overnight after the approximately 80-year-old pipe broke. LADWP said crews will fill the hole with concrete and cover with a slurry seal, which could take two to three days to harden.

A damage estimate was unknown.

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Sunday’s event marks the third major break in the area in three years.

“That’s unacceptable. We think there should be more effort put into replacing aging water systems,” a member from the American Society of Civil Engineers said.

The DWP said they are addressing the issue.

“We’re doing everything we can to replace the pipes as fast as possible. We do have a very aggressive replacement program going on as we speak,” Kirk Boyard said.

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Around 10:30 p.m. Sunday, another water main break took place about 3 miles away in Beverly Grove. It was unclear how much water was lost or damage occurred in that case.