Do we know why in swimming pools we use lot chlorine ?

Many people keep their eyes closed or wear goggles when they go swimming at the pool, in an attempt to prevent the burning and itching often blamed on chlorine. However, the truth about the cause of those stinging sensations is a real eye-opener — and not in a particularly pleasant way. While chlorine is used to kill germs, the source of the eye pain is something known as chloramines, which are created when the chlorine binds with sweat, urine and other bodily fluids that end up in the pool.

The chloramines form in the water, but they also rise into the air thanks to air circulation and people splashing around. So if the pool is located in an enclosed space with limited ventilation, the irritation can get worse, affecting not only the eyes and skin, but also breathing. Ideally, pool operators should take steps to limit the amount of chloramines that can build up by ensuring that plenty of fresh air is pumped into the pool area.

As for the swimmers, they can help by wearing bathing caps, taking a shower before jumping in, and –needless to say — not turning the water around them yellow.

Chlorination for swimming pools

Chlorine is a chemical that disinfects the water and helps to remove debris. You should use a chlorine stabiliser to extend the chlorine’s half-life. Generally, the longer your filtration cycle, the less chlorine you will need. Similarly, the more chlorine you use, the shorter your required filtration cycle.

Remember that your chlorine requirements will be affected by a range of factors, including your pump and filter system, water temperature, water level, amount of debris and the number of swimmers in your pool.