How does fecal matter get on beaches?

When these animals defecate the microbes are carried out of the body on the fecal matter. Sewage spills, sewage overflows, and contaminated stormwater send microbe-containing fecal matter into rivers, lakes, and storm drains which eventually flow into the ocean.



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Some cities also have joint sewer and stormwater systems that can overflow—this leads to “a mixture of raw, untreated sewage and stormwater” that can sometimes flow onto recreational beaches, said Rumpler. Runoff water from large farms can sometimes also contaminate beaches, he added, as can feces from wildlife.

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The two most common reasons for beach closures are elevated concentrations of E. coli and/or cyanobacteria (blue-green algae) blooms. Below, we specifically discuss E. coli and what it means for our lakes and beaches.

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Eighty-four percent of Gulf Coast beaches, 70% of West Coast beaches, and 63% of the Great Lakes reached these potentially unsafe levels at least once in 2022. A tool on the Environment America website shows state-by-state data if you want to see how your local beaches stack up.

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Kamilo Beach, located on the south-eastern tip of Hawaii's Big Island, has been dubbed one of the most plastic-polluted spots on the planet.

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Some two-thirds of Great Lakes beaches that were tested had at least one unsafe day, according to the Environment America report. In Ohio and Pennsylvania, which border Lake Erie, all but three of the tested beaches had at least one unsafe day last year.

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Ilyas, MD. Elevated levels of ABRs on the skin lasted for six hours post-swim, according to the study To reduce the risk of skin infections, it's best to shower shortly after you've been in the ocean. Much like with showering post-workout, a shower after the ocean washes away bacterium.

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You can get sick with diarrhea if you swallow contaminated water in pools, hot tubs, splash pads, oceans, lakes, or rivers. In fact, diarrhea is the most common illness reported for outbreaks linked to water in these places.

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