Chlorine (referred to in water treatment as free chlorine) is being displaced by chloramine—to be specific monochloramine—which is much more stable and does not dissipate as rapidly as free chlorine.
Klorin (dalam istilah pengolahan air disebut sebagai klorin bebas) digantikan oleh kloramina—lebih spesifiknya adalah monokloramina—yang jauh lebih stabil dan tidak menghilang secepat klorin bebas.