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Water main break causes sinkhole, shoots chunks of asphalt at SLO home

A sinkhole opened up in a San Luis Obispo neighborhood early Wednesday morning after a water main broke, sending a plume of water shooting across the street.

According to a post on the San Luis Obispo Police Department Instagram, the water main broke in the 300 block of Calle Lupita in the early morning hours, “causing a large sink hole.”

A video posted by neighbor Todd Kent on Wednesday showed the water blasting from the broken pipe, seeming to direct its torrent directly at one of the homes on the street.

A water main break in the Calle Lupita neighborhood of San Luis Obispo sent chunks of asphalt and debris flying and created a large geyser on May 21, 2025.
A water main break in the Calle Lupita neighborhood of San Luis Obispo sent chunks of asphalt and debris flying and created a large geyser on May 21, 2025. Todd Kent

Kent told The Tribune when the water main broke, it also shot chunks of asphalt and debris at the home for nearly two hours.

One tennis-ball-sized chunk just barely missed their kitchen window, he said, noting it instead hit a wind chime.

A water main break in the Calle Lupita neighborhood of San Luis Obispo sent chunks of asphalt and debris flying at a home along the street. This piece just barely missed the home’s kitchen window.
A water main break in the Calle Lupita neighborhood of San Luis Obispo sent chunks of asphalt and debris flying at a home along the street. This piece just barely missed the home’s kitchen window. Todd Kent

According to the Police Department post, the Utilities Department was working to fix the broken pipe as of mid-morning Wednesday. Water to most of the street was shut off while the work was ongoing.

Coincidentally, the incident happened to occur during National Public Works and Utilities Week, the Police Department post noted.

“Many thanks to our city partners who are doing the hard work keeping our city infrastructure in great shape!” the post concluded.

A sinkhole opened up in the Calle Lupita neighborhood of San Luis Obispo early May 21, 2025, after a water main broke and sent gallons of water shooting into the street. 
A sinkhole opened up in the Calle Lupita neighborhood of San Luis Obispo early May 21, 2025, after a water main broke and sent gallons of water shooting into the street.  San Luis Obispo Police Department

This is the second water main break and sinkhole to occur in the area in recent years.

In 2022, the same street flooded after a water main broke at the intersection of Calle Lupita and Calle Jazmin.

That incident sent nearby residents on a mad dash to try to protect their homes from the barrage of water and resulted in one of the city’s utilities trucks getting stuck in the sink hole.

The San Luis Obispo Utilities Department excavates a water main break on Calle Lupita between Calle Malva and Calle Jazmin on May 21, 2025. That section of the street was closed while repair work was underway.
The San Luis Obispo Utilities Department excavates a water main break on Calle Lupita between Calle Malva and Calle Jazmin on May 21, 2025. That section of the street was closed while repair work was underway. David Middlecamp dmiddlecamp@thetribunenews.com

This story was originally published May 21, 2025 at 10:30 AM.

Kaytlyn Leslie
The Tribune
Kaytlyn Leslie writes about business and development for The San Luis Obispo Tribune. Hailing from Nipomo, she also covers city governments and happenings in San Luis Obispo. She joined The Tribune in 2013 after graduating from Cal Poly with her journalism degree.
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