Originally Posted by malkore
do a search. this has been answered in great detail a few times.
Searching, I've read that Water is chlorinated through two possible processes:
1. Chlorinate water by adding liquid chlorine.
2. Chlorinate water by spraying water with gaseous chlorine.
Also, I found the chemical added is Sodium Hypochlorate. http://www.chemicalland21.com/arokor...POCHLORITE.htm
Now, I don't know if this chemical is used just with pools or also to water supply and settling tanks. However:
Wikipedia identifies that Sodium Hypochlorate is added very sparingly to drinking water:
"A 12% solution is widely used in waterworks for the chlorination of water."
Perhaps knowing the chemical in the water will allow more detailed explanation of how to rid it from the water? =)s