LA County Beaches Closed Due to Bacteria Spike After Storms

Officials warn against swimming at all beaches until bacteria levels subside.

Published on Feb. 13, 2026

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The Los Angeles County Department of Public Health has issued a dire warning against swimming at any beaches in the area after recent rainfall likely elevated the already-high levels of bacteria. The agency announced the 'Ocean Water Quality Rain Advisory,' effective through noon Saturday, with the caveat that it could be extended if it rains again. Officials said the stormwater runoff could have dragged harmful debris, including fallen branches and logs, into the sea.

Why it matters

Los Angeles is known for its iconic beaches, which are a major draw for both residents and tourists. However, the city's urban runoff and drainage system have long been a source of concern, with bacteria levels frequently spiking after heavy rains. This latest advisory highlights the ongoing challenges the region faces in maintaining safe and clean ocean water.

The details

The Los Angeles County Department of Public Health issued the warning on Wednesday, cautioning beach users to avoid water contact for at least 72 hours after rainfall. Officials said Tuesday night's storm likely carried runoff from storm drains, creeks and rivers to the county's 20 major beaches, causing 'potentially higher bacteria levels.' People in sensitive groups, particularly children, the elderly and anyone with pre-existing health conditions, could become ill if they enter the ocean while the advisory is in effect.

  • The 'Ocean Water Quality Rain Advisory' is effective through noon on Saturday, February 15, 2026.
  • The advisory could be extended if it rains again.

The players

Los Angeles County Department of Public Health

The government agency responsible for monitoring and regulating public health issues in Los Angeles County, including water quality at beaches.

Dr. Amalia Almada

A researcher at the University of Southern California's Sea Grant Program who has previously cautioned that Los Angeles is 'one big watershed,' with germs and debris easily finding their way from stormwater drains to the ocean.

Heal the Bay

An environmental nonprofit organization that publishes an annual 'Beach Report Card' ranking beaches in California based on water quality testing.

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What they’re saying

“'Beach users are cautioned to avoid water contact for at least 72 hours after rainfall.'”

— Los Angeles County Department of Public Health (Facebook)

“'Because LA is essentially 'one big watershed,' anything from germs to debris easily 'finds its way from our stormwater drains to our oceans.'”

— Dr. Amalia Almada, Researcher, University of Southern California's Sea Grant Program

What’s next

The Los Angeles County Department of Public Health will monitor the situation and decide whether to extend the 'Ocean Water Quality Rain Advisory' if it rains again.

The takeaway

This advisory highlights the ongoing challenges Los Angeles faces in maintaining safe and clean ocean water, with urban runoff and drainage issues contributing to frequent spikes in bacteria levels after heavy rains. It serves as a reminder for beachgoers to heed public health warnings and avoid swimming in the ocean for at least 72 hours after rainfall to protect their health.