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Ocean Water Quality Rain Advisory

An Ocean Water Quality Rain Advisory has been declared for all Los Angeles County beaches. The advisory will be in effect at least until 12:00 pm, Thursday, May 4, 2023 (72 hours after significant rainfall). Beach users should avoid water contact for at least 72 hours after significant rainfall. This advisory may be extended depending on further rainfall.

A rain advisory is issued when there is significant rainfall that may cause bacteria levels in ocean waters to increase. Bacteria levels can increase significantly during and after rainstorms, as contaminants within the runoff enters the ocean. Bacteria levels may remain elevated up to 3 days depending upon the intensity of the rain and the volume of runoff. Elevated bacteria levels in ocean water may cause illness, especially in children and the elderly. The Department of Public Health recommends that beach users avoid contact with ocean water for a period of 3 days after significant rainfall, especially near flowing storm drains, creeks and rivers.

An ocean water quality rain advisory is declared when there is significant rainfall that may cause run-off from inland to flow to the ocean. Contamination from run-off can cause increased bacterial levels in ocean water especially near storm drains, creeks, and other waterways. Water contact during a rain advisory may cause illness especially in children, the elderly and susceptible people. Bacteria levels may take 72 hours or more to return to normal after heavy rainfall.

At all times, beach users are cautioned to avoid water contact near flowing creeks and storm drains.

The public is notified when a site has exceeded State Standards for bacteria in ocean water on this website, by telephone hotline, and by signs posted at the impacted beaches.

Use the map below to obtain the current water quality status of your favorite beach location. Use your mouse wheel to zoom into a particular location. Click on the marker to identify the sampling location. This map is updated as conditions change.

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