What is the recommended range for chlorine levels in pool water?

The recommended range for chlorine levels in pool water is typically between 1 to 3 parts per million (ppm). This range is considered optimal for effectively sanitizing the water, ensuring it is free from harmful bacteria and pathogens while remaining safe for swimmers. Maintaining chlorine levels within this range helps to provide clear and clean water while minimizing the formation of chloramines, which can cause eye irritation and unpleasant odors.

While higher levels of chlorine might be found in certain situations—such as during shock treatments to address algae blooms or severe contamination—regular maintenance and operation of a swimming pool should generally aim for the 1 to 3 ppm range. Levels outside this recommended range can either be ineffective in keeping the pool properly sanitized or can create uncomfortable swimming conditions, such as skin irritation or damage to the pool equipment.