Product review (5 stars): consider mounting options before your purchase.
I did not have any room behind my refrigerator to mound this so  I actually ended up installing it inside of the refrigerator. It works great.
Our city is known for having pretty decent water but from time to time I would notice a slightly different taste. I assume the change was from mandatory water treatments that the city provides when there is work done on the lines. since I have been using these, the water always tastes good.