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What Are the Main Health Risks of Swimming in Public Pools and How to Prevent Infections Caused by Bacteria and Parasites.
What seemed like just a refreshing pastime may hide important risks. Health experts warn that public pools, if poorly maintained, can become breeding grounds for serious infections.
According to recent studies conducted in the United States, United Kingdom, and Australia, collective aquatic environments have been the scene of outbreaks of intestinal, skin, and respiratory diseases. But why does this happen? How to avoid it? And what can each swimmer do to protect themselves?
Public Pools and the Invisible Health Risks
Public pools, while providing leisure and benefits for physical health, can harbor various harmful microorganisms. One of the most concerning parasites is Cryptosporidium, which can survive chlorine for over a week.
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According to Professor Jackie Knee from the London School of Hygiene & Tropical Medicine, it is the main cause of outbreaks of intestinal diseases in pools, causing diarrhea, vomiting, and abdominal pain.
Bacterial and Fungal Infections Are Also Common
Professor Stuart Khan from the University of Sydney emphasizes that other pathogens like Staphylococcus and fungi can also cause skin and ear infections, such as external otitis, known as “swimmer’s ear.”
Additionally, lung infections caused by bacteria like Legionella can also occur through inhalation of droplets present in the air around the pool.
The Science Behind Water Treatment
Chlorine disinfection remains one of the most effective ways to prevent infections in public pools. However, the effectiveness of the treatment depends on the constant maintenance of the water’s pH and alkalinity.
The process known as superchlorination may also be necessary after incidents of fecal contamination.
Public Pools and Infection Outbreaks
Research indicates that outbreaks tend to occur during peak traffic, such as holidays and school vacations. A study of six pools in the U.S. found Cryptosporidium in 20% of samples collected during the summer.
These data reinforce the importance of constant vigilance and prompt reporting of suspicious incidents to pool operators.
Simple Precautions Help Prevent Infections
According to experts, preventive measures such as showering before entering the water, avoiding urinating or defecating in the pool, and not swallowing water while swimming significantly reduce the risk of contamination.
Proper ventilation of the environment also helps minimize the impact of substances like chloramines, which can irritate the eyes and throat.
Swimming in Nature Also Requires Attention
Rivers, lakes, and the sea are not free of risks. The presence of untreated sewage or animal feces can turn these locations into sources of infection.
Therefore, it is essential to know the source of the water before venturing into natural environments.
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