We live in the country and use well water, and for the last several years we have been purchasing bottles because I've become concerned with the quality of our drinking water. This filter is great because it fits easily under our kitchen sink and takes up very little space. It gives me more confidence to drink our own water, knowing the contaminants are being removed. It was easy to install and I love that the filters last about 6 months, so they'll only need replaced twice a year.