What does the chlorine level in pool water typically need to be maintained at for safe swimming?

Maintaining a chlorine level in pool water at 1 to 3 parts per million (ppm) is essential for ensuring a safe swimming environment. This range is widely recognized as effective in keeping the water clear of harmful bacteria, viruses, and algae. Chlorine works as a powerful disinfectant that sanitizes the water, helping to prevent waterborne illnesses and keeping the pool safe for regular use.

Levels below this range may not provide adequate sanitation, potentially leading to cloudy water and increased risk of infections. Conversely, a chlorine level above this range can cause irritation to the eyes and skin of swimmers, and possibly lead to unpleasant chemical odors. Therefore, 1 to 3 ppm strikes a balance that maximizes both safety and comfort for swimmers, making it the optimal choice for maintaining healthy pool water conditions.