Review on ON4HOME Hardness Drinking Water Filter with Fluoride and Aluminum Removal by Loren Jacobson

I've read other comments that the test kit doesn't change color. I bought it anyway because I wanted to test the waters. I'm not new to water testing. I grew up testing pool water and I had my own tanks and was testing the water all the time. I used test strips before. I tested the tap water and no color change. This water is not free of contaminants as tap water is known to contain contaminants and according to the water supply may contain contaminants. I tested filtered water. All colors are the same. I have tested streaked water before and have never done so. So my conclusion is the same as other people's. These strips don't work.