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The Los Angeles County Department of Public Health 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, on Wednesday afternoon — with the caveat that it could be extended if it rains again.


  The Los Angeles County Department of Public Health announced a water quality advisory Wednesday afternoon. spiritofamerica – stock.adobe.com The Los Angeles County Department of Public Health announced a water quality advisory Wednesday afternoon. spiritofamerica – stock.adobe.com

“Beach users are cautioned to avoid water contact for at least 72 hours after rainfall,” the department wrote on Facebook.

It 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.”

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Officials added that the stormwater runoff also could’ve dragged injurious debris, including fallen branches and logs, into the sea.


  The advisory could extend past Saturday if it rains again.
 The advisory could extend past Saturday if it rains again.

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.

Dr. Amalia Almada, of the University of Southern California’s Sea Grant Program, previously cautioned that because LA is essentially “one big watershed,” anything from germs to debris easily “finds its way from our stormwater drains to our oceans.”

Many Los Angelenos, though, are already abundantly aware of the silent killers stewing in their oceans.


  Officials said Tuesday night’s rainfall likely mixed with bacteria-laden runoff. Anadolu via Getty Images Officials said Tuesday night’s rainfall likely mixed with bacteria-laden runoff. Anadolu via Getty Images

In late January, the environmental nonprofit Heal the Bay dropped its “Beach Report Card” ranking beaches with the best and worst water quality on California’s coast.

The report used an A-F grading system, testing water samples for harmful bacteria including three key fecal indicator bacteria: total coliform, fecal coliform and Enterococcus species.


  Officials warned against swimming at all beach in Los Angeles County. Brandon T – stock.adobe.com Officials warned against swimming at all beach in Los Angeles County. Brandon T – stock.adobe.com

Only seven beaches in LA County made the “honor roll,” a distinction given to beaches with the safest water quality.

LA County wasn’t named to the honor roll in the last two iterations of the report, but narrowly made the cut this year thanks to pristine beaches in Malibu and the Palos Verdes Peninsula.

Santa Monica Pier was informally dubbed the grossest beach in California, according to the report card.

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