When you look at a glass of water what do you see? Nothing, right? Water is colorless, orderless, and usually tasteless. Not so, in some cases. There are tiny bacteria and microorganisms that you can not see with the naked eye. How do you know if they are present in the water you drink? You can have your water tested, but this could become costly, especially if you have to test it quite often. If you use the PUR Water Filters Exstream Portable filter you can be sure to filter out chlorine as well as other virus causing bacteria such as Rotavirus Strain SA-11. Bet you didn’t know, that you can also prevent the Poliovirus type 1 with the very same filter. Sounds like an Exstream-ly wonderful filter!