Chlorine levels in a swimming pool should generally be maintained between:

Maintaining chlorine levels in a swimming pool between 1.0 and 3.0 parts per million (ppm) is essential for ensuring effective sanitation and disinfection. Chlorine is a powerful oxidizer and disinfectant that helps eliminate harmful bacteria, viruses, and algae, providing swimmers with a safe and clean environment.

This range strikes an optimal balance, as levels below 1.0 ppm may not be sufficient to maintain proper sanitation, potentially leading to waterborne illnesses. Conversely, excessively high levels above 3.0 ppm can cause skin and eye irritation for swimmers, as well as unpleasant odors and effects on the swimming experience. Therefore, monitoring and adjusting chlorine levels consistently to remain within the 1.0 to 3.0 ppm range is crucial for pool safety and comfort.