Multiple beaches deemed unsafe as officials issue urgent health warnings to public

Several popular California beaches are under a public health advisory due to elevated bacteria levels in ocean water.

The advisory covers multiple locations across the county, including Inner Cabrillo Beach in San Pedro and Mother's Beach in Marina del Rey, where the entire swim areas are impacted.

Additional warnings are in place near parts of Santa Monica Beach, Venice Beach and several Malibu locations.

Areas surrounding the Santa Monica Pier, Topanga Canyon Beach, Surfrider Beach and Escondido State Beach are included in the advisory, along with sections near storm drains and creeks where runoff can affect water quality.

"Elevated bacteria levels in the ocean can be caused by several factors," the department noted, "including stormwater runoff after rain events, sewage spills or leaks, and animal waste from birds, pets, or marine mammals. Urban runoff from rivers and creeks can also carry contaminants into coastal waters. In addition, warmer water temperatures and the decomposition of organic material can promote bacterial growth."

The department conducts routine water testing at beaches throughout the region and issues advisories when bacteria levels rise above safety thresholds.

Conditions can change quickly depending on weather and environmental factors, officials added. 

At this time, the advisory is a warning, not a full beach closure.

The county's public health website is updated as conditions change, the site notes.