Swimmers near the Santa Monica Pier face another weekend out of the water as the bacteria warning there stretches past 10 days, and LA County health officials have added two more beaches to the no-swim list.

The Los Angeles County Department of Public Health confirmed active ocean water use warnings at three locations as of Sunday, Aug. 2: the Santa Monica Pier (100 yards up and down the coast), Mother's Beach in Marina del Rey (entire swim area), and Inner Cabrillo Beach in San Pedro (entire swim area). The advisories are issued under the authority of LA County Health Officer Dr. Muntu Davis.

The Santa Monica Pier warning has been active continuously since at least Saturday, July 25. Mother's Beach and Inner Cabrillo Beach are new additions, representing an expansion of the advisory beyond the Santa Monica locations flagged earlier, according to Patch's Sunday newsletter.

The department said recent water samples showed bacteria levels exceeding state health standards, increasing the risk of illness for swimmers, surfers, and anyone else entering the water at those locations, NBC Los Angeles reported.

Will Rogers, other Santa Monica sections cleared

Earlier warnings for Will Rogers State Beach and another section of Santa Monica Beach have been lifted after follow-up testing met state standards. The exact date those advisories were lifted was not specified.

The advisory lands during a heat wave that has been pushing large crowds toward the coast. The forecast for Sunday, Aug. 2, called for a high of 80°F in Santa Monica, making the warning especially relevant for residents planning beach trips.

The pier warning remains active.

The scale of beach activity during this heat wave period has been significant. LA County lifeguards recorded 1,950 ocean rescues over July 26–27, along with 71,274 preventative actions and 517 medical aid calls, according to Westside Current.

What residents should know

The Santa Monica Pier advisory covers a relatively small stretch, 100 yards in each direction from the pier. Beaches outside that zone and outside the other two flagged locations remain open for swimming.

Residents can check real-time beach water quality conditions through the LA County Department of Public Health's portal at publichealth.lacounty.gov. Warnings can be lifted within days when bacteria levels drop below state thresholds.