Summer days at a public pool feel refreshing — but they come with hidden health risks. Pool skin infections and other waterborne illnesses are surprisingly common, even in well-maintained facilities. This article explains what you can catch at a swimming pool, how to spot the warning signs, and what simple steps can protect your skin and overall health all season long.
Why Public Pools Can Spread Skin Infections
Many Canadians assume that chlorine keeps pool water completely safe. In reality, chlorine does not eliminate every threat. Bacteria, fungi, and parasites can survive in treated water for several hours — sometimes days.
The more crowded the pool, the higher the risk. Warm, wet surfaces around changing rooms, showers, and pool decks are especially friendly to germs. Good personal hygiene is your strongest defence.
According to Health Canada, recreational water illnesses affect thousands of Canadians each year. Most cases are preventable with a few basic precautions.
Sun Exposure at the Pool: Sunburn and Skin Reactions
Before we talk about infections, it is worth addressing sun safety. Spending time at an outdoor pool means significant sun exposure. Sunburn is one of the most common pool-related skin problems in Canada.
Avoid being in direct sun between 10 a.m. and 3 p.m. Apply a broad-spectrum sunscreen with SPF 30 or higher. Reapply every two hours, and immediately after getting out of the water.
Wear sunglasses and a wide-brimmed hat. Drink plenty of water throughout the day. Severe sunburn can cause blistering, chills, headache, and low blood pressure — these symptoms need prompt medical attention.
Sun Allergies and Photodermatoses
Some people develop what they call a “sun allergy.” This is actually a group of skin conditions that share one thing in common: increased skin sensitivity to UV light. These are known as photodermatoses.
The most common types include polymorphous light eruption, solar urticaria, and childhood sun rashes such as hydroa vacciniforme. These conditions require a dermatologist’s assessment and proper treatment. They are not the same as ordinary sunburn.
Phototoxic and Photoallergic Reactions
Certain medications and skin products can make your skin dangerously sensitive to sunlight. This includes some antibiotics, anti-inflammatory drugs, diuretics, retinoids, some birth control pills, and antifungal medications.
Fragrances, facial creams, and even some sunscreens can trigger these reactions when combined with sun exposure. If you are taking any regular medication, ask your family doctor or pharmacist whether it increases sun sensitivity before your next pool day.
As a general rule, avoid trying new skin products for the first time on a day you plan to spend outdoors. Stick to products you have used safely before.
Common Pool Skin Infections You Should Know About
Pool skin infections range from mildly annoying to seriously uncomfortable. Knowing what to look for helps you act quickly. Most infections are picked up through direct skin contact with contaminated water or wet surfaces.
Athlete’s Foot (Tinea Pedis)
Athlete’s foot is one of the most common pool skin infections in Canada. The fungus thrives in warm, moist environments — exactly what you find around pool decks and change rooms. It causes itching, cracking, and peeling skin, usually between the toes.
Treatment typically requires an antifungal cream or oral medication taken for five to six weeks. To prevent it, always wear sandals or flip-flops on pool decks. Never walk barefoot in change rooms or communal shower areas.
Fungal Nail Infection (Tinea Unguium)
If athlete’s foot is left untreated, the fungus can spread to the toenails. This causes thick, brittle, discoloured nails that are much harder to treat. Topical antifungal creams cannot penetrate the nail plate, so oral medication is usually needed.
Many Canadians struggle with fungal nail infections for years. Prevention is far easier than treatment. Dry your feet thoroughly after swimming — pay special attention to the spaces between your toes.
Pityriasis Versicolor
This fungal infection is caused by Malassezia furfur, a yeast that naturally lives on everyone’s skin. In warm, humid conditions — like those at a pool — it can multiply rapidly and spread through close skin-to-skin contact.
It appears as light or dark patches on the skin, most often on the chest, back, and shoulders. The patches may be more noticeable after sun exposure. Treatment involves antifungal shampoos or creams, and sometimes oral medication.
Folliculitis (Hot Tub Rash)
Folliculitis is a bacterial infection of the hair follicles, often caused by streptococcal or staphylococcal bacteria. It appears as a rash of small red or pus-filled pimples around hair follicles on the legs, chest, or scalp.
Pools and hot tubs with poorly maintained chlorine levels are a common source. The risk is higher if you have any cuts, scrapes, or existing skin conditions. Keep any open wounds covered and out of the water whenever possible.
Warts (Verrucae)
Plantar warts are caused by the human papillomavirus (HPV). Walking barefoot on wet pool surfaces significantly increases your risk. The virus enters through small cuts or soft, waterlogged skin on the soles of your feet.
Warts can be stubborn and take months to fully treat. Over-the-counter treatments are available at Canadian pharmacies, but persistent cases may need professional removal. Again, flip-flops are your best friend at any public pool.
Molluscum Contagiosum
This viral skin infection is caused by a poxvirus. It produces small, flesh-coloured or pinkish dome-shaped bumps on the skin. It spreads easily through direct contact in pool environments, especially among children.
Treatment is usually cryotherapy (freezing) performed by a doctor or dermatologist. In many healthy children, the bumps resolve on their own over several months. However, a doctor should confirm the diagnosis.
Swimming Pool Granuloma
This is a less common but serious infection caused by Mycobacterium marinum. It mainly affects competitive swimmers and people who work with fish tanks. It enters through cuts or scrapes on the hands and feet.
Symptoms include slow-growing, reddish skin nodules. Treatment requires a course of antibiotics and, in some cases, minor surgery. If you notice a sore that does not heal after a few weeks, see your doctor right away.
Eye, Ear, and Other Infections at the Pool
Pool skin infections are not the only concern. Eyes and ears are also vulnerable in shared pool water.
Conjunctivitis (pink eye) can be caused by bacteria such as Chlamydia trachomatis or by chemical irritation from excess chlorine. Symptoms include red, swollen, and watery eyes. This is highly contagious and requires medical treatment.
Swimmer’s ear (otitis externa) is a bacterial infection of the outer ear canal caused by water trapped after swimming. It causes pain, itching, and sometimes discharge. Tilting your head after swimming and gently drying your ears can help prevent it.
For more information on waterborne infections, visit the World Health Organization’s guidance on recreational water safety.
How to Protect Yourself at a Public Pool
The good news is that most pool skin infections are preventable. A few simple habits make a big difference.
Always shower before and after swimming. This removes bacteria from your skin and reduces what you bring into the water.
Wear flip-flops or sandals everywhere on pool grounds — change rooms, showers, and pool decks.
Dry yourself thoroughly after swimming, especially between your toes.
Do not share towels, goggles, or personal items with other swimmers.
Wear well-fitting swim goggles to protect your eyes from contaminated water.
Stay out of the pool if you have open cuts, active skin infections, or diarrhoea.
Reapply sunscreen every two hours and after every swim.
Check chlorine signage. Well-maintained pools post their water quality results publicly.
According to the Mayo Clinic’s skin care guidelines, keeping skin clean and dry after water exposure is one of the most effective ways to prevent fungal and bacterial infections.
Skin Conditions That Worsen at the Pool
Some people already living with a skin condition need to take extra care around pools. Chlorine dries out the skin intensely, which can trigger flare-ups in several conditions.
Conditions that can worsen with pool exposure include acne, rosacea, seborrhoeic dermatitis, atopic dermatitis (eczema), cold sores (oral herpes), and lupus erythematosus. If you manage any of these conditions, speak with your dermatologist before the swimming season begins.
Chlorine strips natural oils from the skin and disrupts its protective barrier. This causes oil glands to overproduce sebum, which can worsen acne. Moisturising promptly after swimming helps restore the skin’s balance.
When to See a Doctor
Many minor skin irritations from the pool clear up on their own within a few days. However, some symptoms need professional attention. Do not ignore signs that something more serious is developing.
Visit your family doctor or a walk-in clinic if you notice any of the following:
A rash, sore, or bump that does not improve after one week
Skin that is increasingly red, warm, swollen, or painful
Pus or discharge from a wound or rash
Eye redness or discharge after swimming
Ear pain or reduced hearing after a swim
Thickened, discoloured, or crumbling toenails
Severe sunburn with blistering, fever, or dizziness
Most provincial health plans in Canada cover visits for skin infections. You do not need a referral to visit a walk-in clinic for skin concerns. If symptoms are severe or spreading quickly, go to your nearest emergency department.
As always, this article is for general information only. Please consult your family doctor or a qualified healthcare provider for advice specific to your situation.
Frequently Asked Questions About Pool Skin Infections
Can you get a skin infection from a chlorinated pool?
Yes, pool skin infections can still occur in chlorinated water. Bacteria, fungi, and viruses can survive in treated pool water for several hours. Wet surfaces around pools — such as change room floors and pool decks — are also common sources of infection.
What does a swimming pool rash look like?
A pool rash often appears as small red or pus-filled bumps around the hair follicles, known as folliculitis. It most commonly affects the legs, chest, and buttocks after swimming. The rash usually appears within a day or two of pool exposure and may be itchy or tender.
How do I prevent athlete’s foot at a public pool?
The best way to prevent athlete’s foot — one of the most common pool skin infections — is to wear flip-flops or sandals at all times on pool grounds. Always dry your feet thoroughly after swimming, paying close attention to the skin between your toes. Avoid sharing towels with other swimmers.
Is it safe to swim in a public pool with a skin condition like eczema?
Swimming with eczema or other skin conditions requires extra care. Chlorine can dry out and irritate sensitive skin, potentially triggering a flare-up. Speak with your dermatologist or family doctor before swimming regularly, and moisturise your skin as soon as possible after getting out of the water.
How long does it take for pool skin infections to clear up?
Recovery time depends on the type of infection. Mild folliculitis may resolve in one to two weeks, while athlete’s foot typically requires five to six weeks of antifungal treatment. Fungal nail infections can take several months. See a doctor if your symptoms are not improving within a week.
Should I go to a walk-in clinic for a pool-related skin infection?
Yes, a walk-in clinic is a convenient first step for most pool skin infections in Canada. You do not need a referral, and most provincial health plans cover the visit. A doctor can identify the type of infection and recommend the right treatment, whether that is a topical cream, oral medication, or a referral to a dermatologist.
Key Takeaways
Pool skin infections are common even in well-maintained, chlorinated pools. Fungi, bacteria, and viruses can survive in pool water and on wet surfaces for hours. Athlete’s foot, folliculitis, warts, and molluscum contagiosum are among the most frequently picked up infections at public pools. Always wear flip-flops in change rooms and on pool decks to reduce your risk. Shower before and after swimming and dry your skin thoroughly, especially between toes. Sun protection is essential at outdoor pools — reapply sunscreen every two hours. Some medications
