What is the breakpoint chlorination range that effectively eliminates chloramines?

Breakpoint chlorination refers to the process where a sufficient amount of chlorine is added to effectively oxidize chloramines, which are compounds formed when chlorine reacts with ammonia and organic nitrogenous matter in pool water. The breakpoint chlorination range necessary to eliminate chloramines is generally recognized to be in the range of 10-30 parts per million (ppm) of chlorine.

At this level, chlorine not only breaks down chloramines but also helps to prevent new formation by effectively sanitizing the pool water. Achieving this concentration ensures that the free chlorine level is high enough to oxidize the combined chlorine (chloramines) back into free chlorine, thereby improving water clarity and odor.

This range is emphasized because it provides a balance, ensuring that there's enough chlorine to react with all chloramines present while still maintaining water safety and quality standards. Maintaining levels within this range helps keep the pool environment healthy for swimmers.