If swimmers complain of a chlorine odor, what is the best way to remove it?

The presence of a chlorine odor in a swimming pool commonly indicates that there are chloramines—compounds formed when chlorine combines with contaminants like sweat, urine, or organic matter. Shocking the pool, also known as breakpoint chlorination, involves adding a high dose of chlorine to the water, which breaks down these chloramines and effectively eliminates the associated odor.

When chlorine is applied at breakpoint levels, it oxidizes chloramines and leaves free chlorine in the water, which not only helps in disinfecting the pool but also contributes to improved water clarity and overall hygiene. This process is essential in maintaining a pleasant swimming environment and ensuring the safety of swimmers.

Other methods, such as simply doing nothing, would not address the root cause of the odor, as chloramines will persist until actively treated. Adding soda ash would help to raise pH levels but does not eliminate chloramines. Backwashing the filters can help clear out physical debris but has no effect on the chemical composition of the water, especially regarding the odor caused by chloramines. Therefore, the most effective method to remove the chlorine odor is through breakpoint chlorination.