Quote Originally Posted by Kalinoche buenanoche View Post
In the States, the public water supplies are sterilized by adding bleach (chlorine) to the water, which kills all the bacteria before the water is pumped to the end users.

I've read that in France, they inject ozone (oxygen-3) into the water, and it's just as effective at killing germs, but unlike bleach, it dissipates before you drink it.
The argument for using bleach instead of oxygen to kill bacteria is that oxygen does dissipate rapidly and harmlessly in the lines, and thus is not effective at killing any bacteria in the water after it leaves the water treatment plant. Chlorinated water reaches your tap fully chlorinated.

Since I've read that all cancer starts from chlorine, the French seem to have a superior system.