What should be the minimum chlorine level in a pool?

The minimum chlorine level in a pool should be 2.0 parts per million (ppm) to effectively disinfect the water and protect against harmful microorganisms. This level ensures that the chlorine is sufficient to kill bacteria, viruses, and other pathogens that could be present in the water. Maintaining a minimum chlorine level of 2.0 ppm helps to promote a safe swimming environment and prevents the spread of waterborne illnesses.

Levels lower than this can lead to insufficient disinfection, allowing pathogens to survive and potentially making swimmers ill. Higher levels, such as 5.0 ppm or 10.0 ppm, could cause irritation to the skin, eyes, and respiratory system for those using the pool, making it difficult to achieve a balance that is both safe and comfortable for swimmers. Keeping the chlorine level around 2.0 ppm is considered optimal for maintaining a clean and healthful swimming experience.