m0useanswered grow question 3 years ago Most municipal water centres use chloramines now.
It will not break down from age or bubbling, has a more stable halflife and does a better job.
Boiling water will remove chlorine in 2hrs but you need over 24hrs to remove chloramine in a boil.
You can break it down with vitamin C added into the water.
1,000 mg of vitamin C to 40gal of water.
or 25 mg/gal
or 6.6 mg/L
Good Luck!