A lot of municipal water plants are starting to use Chloramine instead of aqueous chlorine.
http://en.wikipedia.org/wiki/Chloramine
Letting chloraminated water sit in a container does not let it gas off as did chorinated water.
(Chloramine is quite dangerous, interesting read here: http://www.americanfreepress.net/html/chloraminated_water.html)
http://en.wikipedia.org/wiki/Chloramine
Letting chloraminated water sit in a container does not let it gas off as did chorinated water.
(Chloramine is quite dangerous, interesting read here: http://www.americanfreepress.net/html/chloraminated_water.html)