Water is the heart of every pool, especially infinity and designer pools. Even if it looks clear and clean, it can hide bacteria and invisible impurities.
At Professione Piscina, experts since 1988 in pool construction, we can explain everything you need to know about chlorine in your pool: how it works, how much you need, and how to keep it at the right level for perfectly clean water every time.
Chlorine in the pool: risk or safety?
Many people associate chlorine with a strong smell or potential negative effects, but the reality is more nuanced. In pools, properly dosed chlorine plays a crucial role: it disinfects the water, eliminates bacteria and viruses, and ensures consistent safety for swimmers.
Often, the strong odor noticed in some pools is due to unbalanced chlorine management, not the chemical itself. With proper monitoring of chlorine and pH levels, this issue can be almost completely eliminated, leaving the water clear, pleasant, and safe.
It’s also important to remember that even tap water contains small amounts of chlorine to maintain its quality and safety. In this sense, using chlorine in pools is not exceptional or dangerous—it’s an essential ally for a safe and enjoyable swimming experience.
Why chlorine is essential for your pool
Chlorine in the pool is essential to ensure clean, safe, and crystal-clear water. It serves a dual purpose: disinfecting the water and preventing it from becoming cloudy or green, while eliminating bacteria, viruses, algae, and invisible but potentially harmful microorganisms.
When pool chlorine is lacking, the water quickly becomes a favorable environment for germs and algae. The water turns cloudy, a bothersome green film appears, and the risk of irritation and unpleasant odors increases. Poor chlorination can also damage pool surfaces and reduce the lifespan of the equipment.
How chlorine works: the chemistry behind safe water
Pool chlorine, when it comes into contact with water, transforms into hypochlorous acid, the agent that eliminates bacteria and impurities. This chemical process neutralizes contaminants, keeping the water clear and safe.
It is important to distinguish between free chlorine—the active part that continues to disinfect and fight new contaminants—and combined chlorine, also called chloramines, which forms when free chlorine reacts with organic substances in the water. Chloramines have a reduced disinfecting power and are responsible for the typical pool smell, as well as potential irritation to skin and eyes. Monitoring and balancing these two forms of chlorine is essential to maintain clean and safe water.
The right balance: Chlorine and pH, an inseparable link
Pool chlorine works effectively only if the water’s pH is balanced. A pH that is too high or too low can drastically reduce chlorine’s effectiveness.
The ideal values to maintain are a pH between 7.0 and 7.4 and free chlorine between 1 and 2 ppm (parts per million). Regularly checking pH and chlorine levels is essential for water that stays clear and safe.
Dosaggio del cloro: quanto e quando intervenire
Non esiste una quantità di cloro uguale per tutte le piscine: la clorazione dell’acqua della piscina dipende da diversi fattori come volume della vasca, temperatura, numero di bagnanti, esposizione al sole e condizioni atmosferiche.
Due momenti chiave sono il trattamento d’urto o clorazione shock, da effettuare all’apertura stagionale, dopo temporali o periodi di uso intenso, e il mantenimento ordinario, che consiste nella clorazione settimanale eseguita con pastiglie a lento rilascio o con cloro granulare o liquido. Dosare bene il cloro nelle piscine è il segreto per un’acqua sempre perfetta e sicura.
How to correctly measure pool water levels
Checking chlorine levels in pool water is simple. You can use manual test kits with reagents or tablets, convenient and quick test strips, or digital and photometric systems, which are ideal for luxury or infinity pools where precision is essential.
Optimizing chlorine use in infinity pools
Overflow pools require more precise chlorine management because the water is constantly moving between the overflow basin and the filtration system. For this reason, automatic dosing and pH and chlorine control systems are the ideal solution.
These control units keep chlorine levels consistently correct, reduce waste, and make maintenance much easier, allowing pool owners to enjoy the water without worries.
Chlorine alternatives: what you really need to know
Besides pool chlorine, there are alternative systems such as salt electrolysis, ozone, UV rays, and active oxygen (to name a few). It is important to know that, except for active oxygen, all these systems still produce some amount of pool chlorine. In any case, water quality should always be regularly monitored to ensure safety and clarity.
For more details, you can read our dedicated article on chlorine alternatives.
Trust the expertise of Professione Piscina
Maintaining the right chlorine balance in your pool is essential for water that is always clean, safe, and enjoyable. Proper chlorination, combined with balanced pH, prevents bacteria, algae, and unpleasant odors, ensuring a pool that is always ready to use.
At Professione Piscina, we design and build pools with the most advanced automatic water treatment systems in the Marche, Umbria, and Abruzzo regions. Thanks to our expertise, you can enjoy a perfect pool without effort or chemical waste.
If you want a pool that is not only beautiful to look at but also easy to manage and always safe for you and your family, contact us for a personalized consultation.
