Can a Pregnant Woman Swim in a Chlorine Pool?

Swimming during pregnancy is a popular and recommended activity for many expecting mothers. It provides an array of health benefits for both mom and baby. However, some pregnant women may be concerned about swimming in chlorinated pools and wonder if the chemicals used to keep pool water clean are safe for them and their developing baby.

With some precautions and awareness, swimming in chlorine treated pools can be safe and enjoyable during pregnancy. This comprehensive guide covers everything expectant mothers need to know about swimming in chlorinated pools while pregnant.

Key Takeaways on Swimming in Chlorine Pools While Pregnant:

  • Chlorine is added to pools to kill germs and bacteria. At proper levels, it does not pose health risks for pregnant women.
  • However, breathing in chemical fumes or absorbing chemicals through the skin from high chlorine levels could potentially be harmful.
  • Test the chlorine level before swimming. Ideal chlorine levels for a pool are between 1-3 ppm.
  • Avoid swimming if chlorine levels exceed 4 ppm.
  • Take precautions like wearing goggles, limiting time in the water, and showering after swimming.
  • Listen to your body and stop swimming if you experience symptoms like coughing or skin irritation.
  • Talk to your doctor if you have any concerns about swimming in chlorinated water while pregnant.

Is it Safe to Swim in Chlorinated Pools During Pregnancy?

The short answer is yes, swimming in a properly chlorinated pool is generally considered safe for pregnant women when some basic precautions are taken.

Chlorine is added to public and residential swimming pools to kill harmful microorganisms like bacteria, viruses, and protozoans that can contaminate pool water and lead to recreational water illnesses. At the recommended concentration of 1-3 parts per million (ppm), the chlorine levels typically found in pools are not thought to pose health risks to pregnant women or their developing babies.

However, higher concentrations of chlorine above the recommended levels can cause side effects like irritation to the skin, eyes, and respiratory tract. Pregnant women may absorb or inhale more chlorine due to increased ventilation and blood circulation during pregnancy. So it’s best to minimize exposure to excessive chlorine levels.

The safety also depends on each individual. Those with sensitivities like asthma may experience heightened reactions to chemicals. Women carrying multiples or with pregnancy complications like preeclampsia have increased susceptibility.

Talk to your doctor about your unique pregnancy and health status to determine if swimming in a chlorinated pool is right for you. Take precautions, listen to your body, and you can safely swim through all trimesters of pregnancy.

What are the Benefits of Swimming During Pregnancy?

Swimming is often considered an ideal exercise during pregnancy because it offers numerous benefits for both mother and baby with minimal risk for injury. Here are some of the top reasons doctors and health experts recommend expectant mothers take to the pool:

  • Cardiovascular fitness – Swimming provides an aerobic workout that gets your heart pumping and improves circulation and blood flow throughout the body and to the uterus. It helps stave off pregnancy-related hypertension, swelling, and cardiovascular strain.
  • Muscle strengthening – The water resistance involved in swimming engages all major muscle groups for an effective strength training workout that builds endurance over time. This prepares the body for labor and delivery.
  • Joint pain relief – The weightlessness feeling of water reduces strain on the joints, ligaments, and tendons. This alleviates common pregnancy pains in the back, hips, knees, and ankles caused by added weight and shifting posture.
  • Better sleep – Research shows swimming helps improve sleep quality which is often disrupted during pregnancy by nausea, frequent urination, heartburn, aches, etc. The exercise reduces stress and fatigue for more restful sleep.
  • Healthy weight gain – Swimming workouts burn calories and build metabolism to help control pregnancy weight gain and reduce postpartum retention. This lowers risks like obesity, diabetes, and preeclampsia.
  • Mental wellbeing – The meditative nature of swimming can lower stress, anxiety, and depression which commonly affect expecting mothers due to hormonal changes and the uncertainties of pregnancy and childbirth.

Overall, swimming is an ideal exercise with numerous benefits during pregnancy. As long as basic precautions are taken, there is no reason to avoid swimming just because the water is chlorinated.

What Precautions Should Pregnant Women Take When Swimming in Chlorine Pools?

While properly chlorinated pool water is deemed safe for pregnant women, it’s wise to take some simple precautions to further minimize any potential risks when swimming during pregnancy. Recommended precautions include:

  • Test chlorine levels – Before getting in a public or residential pool, use test strips to check that chlorine concentrations fall within the ideal 1-3 ppm range. Avoid swimming if levels exceed 4 ppm.
  • Time limits – Limit pool time to 30 minutes a day, especially in highly chlorinated water. Take breaks and rehydrate to reduce chemical absorption and exposure.
  • Hydration – Drink plenty of water before, during and after swimming to prevent overheating and dehydration which increase chemical absorption.
  • Goggles – Wear goggles to create a barrier protecting eyes and mucus membranes from direct contact with chemicals.
  • Rinse off – Shower immediately after exiting the pool to wash any residual chemicals from your skin, hair, and swimsuit.
  • Moisturize – Apply gentle, hydrating lotions or oils after swimming and showering to replenish skin and prevent drying or irritation.
  • Ventilation – Avoid enclosed pools with inadequate ventilation which allows buildup of chemical fumes you could inhale.
  • Listen to your body – Exit the pool immediately if you feel nausea, dizziness, coughing or skin, eye or throat irritation which could indicate chlorine sensitivity.

By taking these simple precautions, pregnant women can safely reap the many benefits swimming offers during pregnancy while minimizing chemical exposure from the chlorinated water.

How Does Chlorine in Pools Affect Pregnant Women and Babies?

Chlorine can impact pregnant women and developing babies when directly absorbed through the skin or inhaled into the lungs at high concentrations. Here’s an overview of the potential effects:


  • The pregnant woman’s skin is particularly permeable so chemicals like chlorine can be more readily absorbed into the bloodstream.
  • Once in the bloodstream, the chemicals can cross the placenta potentially exposing the fetus.
  • The amniotic fluid and baby’s thin skin also provide little protection against absorption.


  • Chlorine in pools mixes with organics from swimmers’ sweat, skin cells and urine to form volatile disinfection byproducts which are released into the air.
  • Pregnant women can inhale these lung-irritating chemical fumes, especially in enclosed pools.
  • The respiratory changes during pregnancy increase inhalation risks.

Potential effects

Higher chlorine exposure has been linked to:

  • Skin rashes, itching, redness or burning
  • Eye irritation and vision changes
  • Coughing, trouble breathing, asthma attacks
  • Nausea, vomiting, dizziness
  • Cell damage
  • Developmental delays or defects
  • Miscarriage or stillbirth

However, these effects have not been conclusively tied to chlorinated pools at proper sanitation levels. Still, it’s smart for pregnant women to take precautions and minimize exposure risks.

What Chlorine Level is Safe for Pregnant Women?

The safe chlorine range recommended for swimming pools is 1-3 parts per million (ppm). At these concentrations, chlorine effectively kills germs without posing health hazards to pregnant women.

Here is an overview of safe chlorine levels:

  • 1 ppm – The minimum chlorine concentration for a pool. Any lower does not sufficiently eliminate contaminants.
  • 1-3 ppm – The ideal chlorine range for safe swimming. Levels are high enough to sanitize but not cause side effects.
  • 3 ppm – The maximum recommended chlorine level. Beyond this concentration, irritation is more likely.
  • 4 ppm – Chlorine levels above 4 ppm are too high for safe swimming during pregnancy. Effects like skin irritation, breathing issues, and nausea become more probable.
  • 5+ ppm – Swimming is not recommended when chlorine concentrations exceed 5 ppm. High levels greatly increase risks to mom’s and baby’s health.

To maintain safe 1-3 ppm chlorine levels, pools typically require:

  • 1-3 tablespoons of chlorine concentrate per 1,000 gallons of water
  • Monitoring and adjustment of chlorine 2-3 times per day
  • Shock treatment at 5-10 ppm weekly to clean and restore levels

When chlorine is kept within the recommended 1-3 ppm range, pregnant women can swim safely and gain all the benefits water workouts offer.

Signs the Chlorine Level is Too High

The ideal way to check chlorine levels is using test strips to measure the exact ppm concentration. But even without test strips, there are signs that excessive amounts of chlorine are present in pool water:

  • Strong odor – A strong chemical smell indicates too much chlorine gas in the air.
  • Eye irritation – Stinging, watery, red eyes are a key sign of high chlorine exposure.
  • Skin irritation – Itchy skin, rashes and burning sensations point to high chemical absorption through the skin.
  • Coughing or breathing issues – Frequent coughing, wheezing, stuffy nose or sore throat signal inhalation of too much chlorine gas.
  • Discolored hair or suits – Suits or hair that fades or looks greenish or reddish after swimming reflect excess chemical absorption.
  • Cloudy water – When chlorine binds with contaminants, it becomes less effective. Cloudiness means it’s likely time for shock treatment to restore proper sanitation levels.

If you notice any of these signs of excessive chlorine in a pool, avoid swimming until levels have been lowered to 1-3 ppm.

Are Saltwater Pools Safer for Pregnant Women?

Saltwater pools offer a chlorine alternative but do not completely eliminate chemical exposure risks during pregnancy. Here’s an overview of how they compare:

How saltwater pools work

  • Salt is added instead of chlorine pellets/liquids to produce hypochlorous acid which cleans and disinfects the water.
  • The salt concentration is typically ~3,000 ppm (10x less than ocean water).
  • Electrolytic chlorine generators use electrolysis to continually convert the salt into germ-killing hypochlorous acid.

Possible benefits

  • Lower chlorine odor and irritation since the sanitizer is created gradually, not dumped in.
  • May allow slightly higher chlorine levels of up to 5 ppm since the hypochlorous acid formulation is thought to be less irritating than other chlorine compounds used in regular pools.

Precautions still needed

  • Measure and maintain safe chlorine levels between 1-3 ppm.
  • Long exposure and poor ventilation can still cause irritation. Take breaks and rinse off after swimming.
  • Saltwater can dry skin so moisturize after swimming.
  • Salt levels can climb over time so monitoring is key.

While less irritating than highly chlorinated pools, saltwater pools are not a completely chlorine-free option and similar precautions are still needed for pregnant women.

Tips for Safely Swimming in a Chlorinated Pool While Pregnant

Here are some top tips for staying healthy and having an enjoyable swim when you’re expecting:

  • Check chlorine levels – Use test strips to ensure the concentration is 1-3 ppm before entering the water.
  • Time it right – Swim when chlorine levels are lowest, before any shock treatments. Swim early in the morning or after 7 pm when the sun has lowered chemical evaporation.
  • LIMIT sessions to 30 minutes or less, especially if pregnant with multiples or have complications.
  • HYDRATE well before and after swimming to prevent dehydration and chemical absorption.
  • Wear GOGGLES and a swim cap for added protection.
  • Apply petroleum jelly on sensitive spots like under eyes, around the mouth and nose for an added barrier.
  • Shower immediately after swimming to rinse any chemicals from your skin and hair.
  • Use moisturizing lotions and gentle hair products after swimming to replenish and prevent drying.
  • Avoid enclosed and poorly ventilated pools where chemical fumes concentrate.
  • Listen to your body and exit the water if you have any symptoms of chlorine overexposure like coughing, stinging eyes, nausea or skin irritation.

By closely following these tips, pregnant women can keep chlorine exposure to safe levels and experience all the relaxation and fitness benefits swimming offers during this special time.

Frequently Asked Questions About Swimming in Chlorine Pools While Pregnant:

1. Can chlorine cause birth defects if you swim while pregnant?

There is no evidence conclusively linking chlorinated pools to birth defects at proper 1-3 ppm sanitation levels. Higher concentrations may increase risks but birth defects are unlikely with recommended precautions. The exercise benefits outweigh risks of defects.

2. Does the chlorine in pools affect pregnancy tests?

No. Chlorine levels used in pool water are too low to impact pregnancy hormone hCG levels or cause false negatives on pregnancy tests. Exposure through swimming does not affect the accuracy of home pregnancy test results.

3. Can hot tubs increase pregnancy risks from chlorine?

Yes. Hot tubs involve higher chlorine concentrations (2-5 ppm), longer soaking times, and higher temperatures which all increase chemical absorption from the warm water and steam. Pregnant women should avoid hot tubs to be safe.

4. Does chlorine cause miscarriage or stillbirth if you swim while pregnant?

There is no scientific proof that swimming in chlorinated pools causes pregnancy loss when precautions are taken and chlorine is kept within 1-3 ppm. While higher levels may increase risks, the exercise benefits outweigh potential risks at safe concentrations.

The Takeaway – Is It Safe for Pregnant Women to Swim in Chlorine Pools?

Swimming is a highly recommended exercise with numerous benefits during pregnancy as long as basic precautions are taken when in chlorinated pools. By measuring chlorine levels, limiting time in the water, rinsing off after swimming, and listening to your body, you can safely reap all the cardiovascular, muscular, joint pain relief and mental wellbeing benefits swimming has to offer.

Chlorine at the proper 1-3 ppm concentration kills harmful germs without posing health hazards to you or your baby. If chlorine levels are kept within recommendations and you take sensible precautions, swimming in a chlorinated pool can be safe and beneficial exercise throughout your entire pregnancy.

Similar Posts