Heavy rainfall in Los Angeles County has prompted water quality warnings at numerous beaches, creating potential health hazards for swimmers. Reports from CBS News and local environmental agencies indicate that the significant downpour has caused increased runoff, carrying pollutants into ocean waters and elevating the risk of bacterial contamination. Health officials have issued advisories, urging the public to avoid swimming at beaches where water quality is compromised, as contaminated water can lead to gastrointestinal issues and skin infections. The affected beaches are being closely monitored with regular water samples tested to assess contamination levels.