Is Chlorine Safe to Use in a Swimming Pool?

One cannot simply disagree with the great disinfectant properties of the chlorine. Chlorine acts as a sanitizer to kill germs, viruses, and bacteria that infest the pool over time. Thus, it protects the swimmers from waterborne diseases that could make them sick. However, for those who may not know, chlorine also has some health hazards related to it. 

These health risks range from mild eye and skin irritation to severe respiratory issues. Keeping that in mind, can we wonder that is chlorine safe to use in a swimming pool? Let’s discuss how risky actually chlorine is and is it safe to use it in a swimming pool. 

Side effects of chlorine

According to, Chlorine has an unpleasant pungent odour that most of the swimmers find very overwhelming. Secondly, chlorine causes skin irritation along with redness of eyes in many swimmers.

An excessive amount of chlorine in pools can prove to be risky to your breathing. That is why swimmers with respiratory illnesses such as asthma can trigger disease symptoms when swimming in highly chlorinated water. 

Another health risk related to chlorine is when chlorine reacts with organic materials in the pool such as sweat, pee, oil, and body lotion of the swimmers. 

This reaction results in the formation of a compound called trihalomethanes that have a certain short-term toxic effect on kidneys. In fact, it is the trihalomethane that causes eye and skin irritation in the pool and not the chlorine alone.  


Is it safe to use in swimming pools?

Pool owners know it all so well that chlorine level in the pool water needs to be maintained at a standard measure of 1ppm to 3ppm. A chlorine level higher than 3ppm makes the water over-chlorinated. As a result, the possible side effects of chlorine are triggered and become more prominent in swimmers. Moreover, to set the chlorine level right, you’ll also have to maintain the right pH level that varies between 7.2 and 7.6 while 7.4 is ideal. 

If you are maintaining the suitable pool chemistry then there are no major risks that chlorine poses to the swimmers. The mild side effects such as skin or eye irritation are however very common but they do not cause any notable health hazard. These symptoms get okay once you finish your swimming session. 

Therefore, chlorine is safe to use in a swimming pool provided that chlorine levels are maintained according to the standard.

Also, the hygiene of swimmers has a significant impact on the pool’s chemistry. If swimmers maintain good hygienic and sanitary conditions, the chances of skin and eye irritation in the pool minimizes. Since it is the reaction of organic materials in the pool that react with chlorine to give rise to these symptoms.  


Yes, it is totally safe to use chlorine in swimming pools as long the chlorine levels are not too high. Health experts also believe that the usual chlorine levels in our swimming pools pose no serious health risk for the swimmers. The mild side effects are normal and they too eradicate overtime.