Chlorine in water

I'm a process operator at a municipal water plant & I take my chlorine analyzer home with me periodically and I can definitely answer this question. First of all, you can't remove chloramines with an air stone.. it only works for chlorine. Chloramines are only used in really big cities.. mpst municipalities are on chlorine, you can call your water plant and they will be happy to tell you which one they use. We aim for a chlorine residual between 1 mg/L and 2 mg/L in the distribution system at all times... The chlorine residual will be waaaay higher if you let your water run for a few minutes; The residual of 1-2 mg/L degrades naturally in your pipes when thwy arent running. With that bieng said, if you fill a bucket up as soon as you turn on your tap that residual will be drastically reduced before even using the air stone. Even at full strength coming out my tap, after 12 hours with an air stone in my reservoir there's less than 0.05 mg/L residual and I'm good to water. Other factors that influence chlorine degradation may include high temperatures, light and organic content in your reservoir ☮️