Food poisoning from improperly refrigerated picnic lunches may also have some of the same symptoms as swimming-related illnesses, including stomachache, nausea, vomiting and diarrhea. Not all illnesses from a day at the beach are from swimming.
Pets can be poisoned by drinking or swimming in toxin-contaminated water. When people are exposed to cyanotoxins, they may have hay fever-like symptoms, skin rashes, sore throat, cough, nausea, vomiting, diarrhea, or even kidney or liver damage. In highly polluted water, swimmers may occasionally be exposed to more serious diseases.Īnother potential source of illness includes some types of cyanobacteria that form algal “blooms” (discolored water) and the toxins they produce. Other minor illnesses associated with swimming include ear, eye, nose and throat infections. It occurs in a variety of forms that can have one or more of the following symptoms: nausea, vomiting, stomachache, diarrhea, headache or fever. The most common illness associated with swimming in water polluted by sewage is gastroenteritis. They require little or no treatment or get better quickly upon treatment, and they have no long-term health effects. Fortunately, while swimming-related illnesses are unpleasant, they are usually not very serious. In addition, pollution is created by people who leave trash or animal wastes at beaches.Ī sign recommending no swimming because of high bacteria levels.Ĭhildren, the elderly and people with weakened immune systems are the most likely populations to develop illnesses or infections after coming into contact with polluted water, usually while swimming. Pollution can also come from high concentrations of farm animals like pigs and chickens that can contaminate local waterways with runoff, which is then carried to beaches and swimming areas. Polluted runoff (water that drains after rainfall) and untreated sewage released into the water can expose swimmers to harmful microorganisms called “pathogens.” These pathogens can be present at or near the site where polluted discharges enter the water. In the event that beaches are closed or advisories are posted, it is most often because water samples for certain bacteria indicate that harmful bacteria, viruses, protozoa, or parasites are likely present in the waters. EPA also supports monitoring and notification efforts by local beach programs by providing grant money. EPA supports local and state efforts to protect and clean up beaches. Swimming at beaches with pollution in the water or in the sand can make you ill.
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