Health officials are cautioning the public to stay out of ocean along Los Angeles County beaches following recent rainfall that may have pushed bacteria levels higher than normal.

The advisory, issued by the Los Angeles County Department of Public Health, urges beachgoers to avoid entering the water, particularly in areas near storm drains, rivers, and creeks where runoff tends to collect.

Officials say even light rain can wash contaminants from streets and surrounding areas into the ocean, creating potential health risks, NBC4 reported.

The Ocean Water Quality Rain Advisory will remain in place until at least early Wednesday morning. Authorities also warned that runoff may spread beyond the shoreline and affect beach sand, increasing the risk of exposure even outside the water.

“Ocean and bay recreational waters, especially near discharging storm drains, creeks and rivers can be contaminated with bacteria, chemicals, debris, trash and other public health hazards from city streets and mountain areas after a rain fall,” the department said.

“Individuals who enter the water in these areas could become ill. Rain advisories remain in effect for 72 hours after the rainfall ends.”

Public health officials emphasized that bacteria levels are typically elevated for several days after rainfall, making it unsafe for swimming, surfing, or other water activities during that window.

Residents and visitors looking for updates on current beach conditions can access a 24-hour recorded hotline provided by the county for the latest information.

Coming into contact with polluted ocean water after rain can make people sick. Health officials say bacteria and other harmful substances wash into the water from streets and nearby areas.

People who swim or play in the water may get stomach problems like nausea or diarrhea if they swallow it. They can also develop skin rashes or infections, especially if they have cuts. The water can irritate the eyes, ears, and throat, and in some cases, breathing issues can occur.

The Los Angeles County Department of Public Health says the risk is highest near storm drains, rivers, and creeks, where runoff flows into the ocean.

Young children, older adults, and those with weaker immune systems are more likely to get sick, so officials urge people to avoid the water for several days after it rains.

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