This filter only filters water for our ice-maker. We do not have the drinking in or outside of the door water feature. As far as I can tell, the filtered water for our ice is very good. However, the device is very difficult to remove and install, especially for arthritic fingers and hands. I usually throw out at least 2 buckets of ice afterwards, as the ice that comes out after installing a new filter is dirty. I mean really dirty! so what's up with that? There is little, if any, deposit sediment in the bottom of a glass when the ice is melted, a good thing. Wish the engineers could design a filter not so hard to remove or install!