Though I would share with you this article in The Vermonter about chloramine in the tap water drinking supply. Here's a fun quote:
PCAC, however, asserts that there are a number of reasons why chloramine should not be used. “Among the many concerns we have about chloramine, there are eight key points,” says Rebecca Reno, a PCAC member. “One is that there has been no adequate testing on the skin or respiratory effects of chloramine on human beings.”That, in a water chestnut shell, is why tap water ain't all that great. The government can easily put whatever new, as yet untested substance it wants into your drinking water supply. You might never even hear about it and only experience it once it's running through your tap. Pure and simple, the water might have things in it you don't know about and don't want.
Bottleless water coolers like Pureez eliminate that problem, because they take everything out, leaving you with water that is as pure as possible. Would you want to add chloramine to that?