What should be done if a pool has a strong chlorine odor?

A strong chlorine odor in a pool is often an indication of chloramines, which are formed when chlorine combines with organic matter such as sweat, urine, or other contaminants in the water. This unpleasant smell suggests that the chlorine is not effectively sanitizing the pool water.

To resolve this issue, testing the chlorine levels is crucial to determine whether they are too low or if there is an imbalance in the water chemistry. If the levels are low, adjusting the chlorine levels by adding more chlorine is necessary. In many cases, shocking the pool—adding a large dose of chlorine to break down chloramines and other contaminants—will help eliminate the odor and improve water quality. This process not only enhances sanitation but also restores the effectiveness of chlorine, making the environment safer and more pleasant for swimmers. Hence, testing and adjusting chlorine levels, possibly shocking the pool, is the appropriate action to take.