infectious diseases you can catch from stagnant water

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Updated Jan 7, 2025 | 03:19 PM IST

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4 Infectious Diseases You Can Catch If You Swim In Stagnant Water

SummaryInfectious diseases do not only happen when you swim in stagnant pool, but but also ponds. If you are wondering whether ponds are safer, since they are mostly a natural water body, the answer is no. This is because almost all ponds have stagnant water. Whether in pool or in ponds, you can still catch diseases. Know more here.

The year 2024 was called a year of diseases, there was a surge in almost all kinds of diseases. Right now, it is the spread of virus, especially due to the extreme cold weather. However, as the new year passes, we will soon be witnessing the temperatures rising, and would want to go out, jump in the pool. But is it really safe?

Read for Why Swimming In Still Water Isn't Safe For You?

Swimming in a pool which has been kept stagnant over the winters is of course not the best decision. This is because when water is still, it can become contaminated in less than 24 hours. So, if it is kept stagnant over the winters, chances are that it will be a breeding ground for many bacteria. This happens due to the bacterial biofilms. These get attached to the surface and form a sludge slime-type construct which then protects itself and also harbors more bacteria. Once released, they form even more biofilms.

This is not just in the case of swimming pools, but also ponds. If you are wondering whether ponds are safer, since they are mostly a natural water body, the answer is no. This is because almost all ponds have stagnant water. Whether in pool or in ponds, you can still catch diseases. Here are the 4 diseases you can catch:

Sauna Rash

In the winter season, some also opt for heated pools. It is also helpful for a post stressful days. However, there are germs there too, which can react with your skin and cause a rash. These are also known as hot-tub rash. This happens because germs are even more active when they are exposed to high-temperature water. As per the Centers for Disease Control and Prevention (CDC), heated pool that tests positive for Pseudomonas aeruginoa, must be treated immediately, as they spread infection. As per a 2016 study in the International Journal of Environmental Research and Public Health, "Pseudomonas aeruginosa accounts for many episodes of infections associated with attendance at swimming pools."

Swimmer's Ear

When we swim, it is very common to have water enter your ear and nasal cavity. While it is temporary, if the water remains trapped in the passageway, it can allow bacteria or fungi to grow. It can also cause swelling, pain, and terrible itching in the ears.

Diarrhea

Yes, you read that right. You can catch diarrhea in pool. This is because the germs that cause cholera and diarrhea are also found in the pools or ponds when it is not cleaned. When you swim, you may swallow some amount of that water, even if it is a small amount, it can still lead to infections from germs like E.coli, Shigella, cryptosporidium norovirus, etc.

Respiratory Diseases

We already have many respiratory diseases going on, including common cold, flu, HMPV, RSV and more. If you are in the pool, which has been stagnant, then you may catch germs like bacterium Legionella.

There are certain contamination that are prone to pond, which include:

Human or animal waste, which can lead to E.coli. While this can happen even in pools, but ponds are prone to biological waste, as they are in the open area and not usually regulated.

Microscopic Parasites are common in pools, and they have a life cycle that transfers between snails, waterfowl, and other mammals that live around water.

Algae and microcystin also occur in ponds which have excess nutrients, which feed microscopic planktonic algae cells. While some of the algae are harmless, others can produce toxin called microcystin.

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