Miami-Dade issues bacteria advisory for three Miami Beach beaches

Miami-Dade health officials issued a water quality advisory for Golden Beach, North Shore Ocean Terrace at 73rd Street and Bark Beach at 79th Street after tests completed Thursday, July 9, 2026, found bacteria levels that did not meet state recreational standards. The Florida Department of Health in Miami-Dade County said the warning remained in effect Friday and will stay up until follow-up testing shows the water has dropped below the accepted health level.

The practical advice is simple: stay out of the water at the affected beaches and avoid swimming or other water-related activities there until the advisory is lifted. A bacteria advisory does not mean every person who enters the ocean will get sick, but it does mean the sampled water failed to meet the level officials use for safe recreational use. State guidance classifies marine water as poor at 71 or more enterococci per 100 milliliters, and those bacteria can signal fecal pollution from stormwater runoff, pets and wildlife, or human sewage.

The advisory hits as Miami Beach and nearby shorelines draw heavy summer crowds, when the ocean can be the obvious place to cool off. Bark Beach and North Shore Ocean Terrace sit in one of the county’s most heavily used coastal corridors, where a single water-quality warning can affect beachgoers, dog walkers, tourists and nearby businesses at the same time. For anyone headed to the sand this weekend, the safer move is to check county health updates before getting in the water and be ready to choose another beach if conditions do not improve.

The alert also fits a familiar pattern in Miami-Dade, where water-quality monitoring is constant and advisories can recur after rain, runoff or other contamination events. Miami-Dade County’s Department of Environmental Resources Management samples water at 87 locations along Biscayne Bay, and the county says recreational activity there contributes $3.8 billion in economic output, $2.1 billion in income and 57,000 jobs. That makes each warning more than a beach-day inconvenience: it is a reminder of how closely public health, coastal recreation and the local economy are tied together.

This is not the first recent bacteria advisory in the county. Health officials lifted a high-bacteria warning at North Shore - 73rd St. on January 28, 2026, after tests showed acceptable Enterococcus levels, and they lifted a similar advisory at Crandon Park North on May 28, 2026. Another Miami-Dade water-quality alert went out on May 22, 2026, adding to a run of monitoring this year that beachgoers are likely to keep seeing whenever coastal conditions worsen.