The Risks of Natural Waters: From Diarrhea to Ear Infections

The arrival of summer heat leads many to seek refreshment at the waterfront, as the proximity to nature is always appealing. However, natural waters, such as rivers, lakes, or mining ponds, are not only popular for their refreshing experience but also come with numerous potential dangers. Swimming in non-designated bathing areas can be particularly risky, as water pollutants and pathogens can cause serious health problems.

It is well known that fungal infections and complaints related to chlorine are common around swimming pools, but natural waters are not free from risks either. Sewage, wildlife droppings, and other contaminants can all contribute to the deterioration of water quality. Bathing in such waters can not only be uncomfortable but can also be a source of serious illnesses, making it important to be aware of the possible dangers.

Pathogens that spread in water can appear in various forms, and often the greatest danger comes from waters contaminated with sewage. It is essential for bathers to be aware of these risks to avoid unpleasant and severe consequences.

Viruses and Water Safety

Among the viruses that spread in water, adenoviruses and rotaviruses are the most dangerous. These virus strains typically enter natural waters through sewage, especially in rivers where contaminated bathing water is accessible. It is enough for a bather to accidentally swallow a small amount of infected water to become infected. They pose a serious risk, especially to children, as their immune systems are not yet developed enough to defend against these viruses.

The consequences of infection generally manifest as gastrointestinal issues, such as vomiting and diarrhea. In addition, these viruses can also attack the conjunctiva and ear area, leading to further complications. Regular monitoring of water quality and the use of designated bathing areas can help minimize the risk of infection.

Bacterial and Algal Issues

Bacteria also pose significant problems in natural waters. Cyanobacteria, commonly known as blue-green algae, proliferate especially in warm weather and stagnant water. These algae are naturally present in waters but can explode in numbers under the right conditions. The toxic substances produced by the algae can cause skin rashes and even respiratory difficulties, leading to allergic reactions.

Bacteria such as Legionella also present a serious threat. These bacteria enter natural waters through the water supply network and can easily proliferate in the summer heat. When inhaled through water vapor, Legionella can reach the lungs, potentially causing pneumonia. Symptoms of legionellosis range from mild flu-like signs to severe, life-threatening conditions.

Parasites in Natural Waters

Parasites found in natural waters, such as Cryptosporidium and Giardia, are also concerning. These parasites enter bathing waters through water contaminated with animal feces. Cryptosporidium is particularly dangerous as it attacks the intestines and can cause severe enteritis. Giardia can also lead to serious diarrhea and vomiting.

The highest risk occurs when bathing in water where animals are grazing. To avoid infection, it is important to always consider the cleanliness of the water source and, if possible, avoid places where animals may be nearby. The best prevention against illnesses caused by parasites is choosing clean, monitored bathing areas.

The Risks of Fountains and Bathing

Fountain water was originally not designed for bathing, yet many choose these places during the summer heat. However, fountains can pose serious dangers, as many pathogens can settle in the water. Among these are microorganisms that cause diarrhea, but the Legionella bacteria are also common guests in these water sources.

In the summer heat, the proliferation of Legionella is particularly concerning, as inhaling water vapor can lead to serious respiratory problems. The disease caused by Legionella can result in severe symptoms, such as pneumonia, which can even be fatal. Therefore, it is extremely important not to use fountains for bathing and to avoid such locations.

What to Do to Avoid Infections?

The most important thing we can do is to always bathe in designated areas where the water quality is regularly monitored by authorities. Using such places significantly reduces the risk of infection. It is also advisable to avoid drinking the water and to always shower after bathing to remove potentially harmful substances from our skin.

When hiking, drinking from streams is strictly prohibited; instead, we should always drink from sources that are marked for cleanliness. If infection does occur, symptoms usually subside within a few days, but if vomiting or diarrhea worsens, it is essential to see a doctor. Prevention is always the best solution, so let’s pay attention to water cleanliness and the safety of bathing areas.