Swimming at public pools or water parks is one of the best ways to beat the heat, especially during scorching summer days. Beyond the fun and relaxation, swimming also offers countless benefits—from improving physical health and boosting mood to providing valuable social time with family and friends. But as refreshing as that crystal-blue water looks, have you ever wondered how clean it really is?
The truth is, while swimming has tremendous health benefits, public pools do come with risks—ranging from minor skin irritations to more uncomfortable gastrointestinal infections. Fortunately, with the right knowledge and habits, you can enjoy the water without stressing over what might be floating beneath the surface.
Are Public Pools Really Clean?
Every summer, news stories and social media posts highlight the “ick factor” of public swimming spaces. These concerns aren’t completely unfounded.
- Chlorine does help—but not instantly. Chlorine is widely used to disinfect pools, but it doesn’t kill every germ right away.
- Some pathogens survive for days. For example, Cryptosporidium (a parasite linked to diarrhea) can survive in chlorinated water for up to 10 days. Just a microscopic amount of contaminated water is enough to infect multiple swimmers.
- Other common pool germs. Pseudomonas aeruginosa can cause hot tub rash and swimmer’s ear, while viruses like norovirus and adenovirus may linger in water and trigger illness.
On top of that, swimmers themselves bring substances like sweat, urine, skin cells, and body oils into the pool. When these mix with chlorine, they form chemical byproducts called chloramines, which can cause irritation and that strong “chlorine smell.” Ironically, a strong chlorine odor is not a sign of cleanliness—it can actually mean the water is contaminated.
How to Stay Safe at Public Pools
The good news is that most pool-related risks are preventable. Both pool operators and swimmers can take steps to reduce exposure to harmful germs. Here are 10 practical tips to keep your swim safe and healthy:
- Shower before swimming. A quick rinse (at least 1 minute) helps remove dirt and oils that weaken chlorine.
- Avoid swimming if you’re sick. Especially if you have diarrhea or open wounds.
- Keep pool water out of your mouth. This lowers the chance of ingesting germs.
- Don’t swim with diarrhea. If you’ve had cryptosporidiosis, wait at least two weeks after symptoms stop before returning to the pool.
- Take bathroom breaks often. For both kids and adults, this helps prevent accidents.
- Change diapers away from the pool. Always check and change diapers in designated areas.
- Cover open cuts. Use waterproof bandages if you must swim.
- Dry ears thoroughly. This helps prevent swimmer’s ear.
- Shower afterward. Rinsing off helps wash away germs and chemical residues.
- Pay attention to water quality. If the pool smells strongly of chlorine, appears cloudy, or seems poorly maintained—skip the swim.
Why Pool Hygiene Matters
According to the CDC, between 2015 and 2019, over 200 swimming pool–related outbreaks were reported in the U.S., affecting more than 3,600 people. While most illnesses are mild, some can lead to more serious health problems. That’s why staying informed—and practicing good pool hygiene—is essential for enjoying the water safely.
The Bottom Line
Swimming in public pools and water parks comes with certain risks, but with the right precautions, those risks can be minimized. By showering, taking breaks, avoiding swimming while sick, and being mindful of water quality, you can protect yourself and your family while still enjoying the many health and social benefits of swimming.
Disclaimer: This article is for informational purposes only and should not be taken as medical advice. Always consult a healthcare professional for concerns about swimming-related health risks or infections.
