Product review (1 stars): Not NSF 53 certified. Does not filter contaminants. Only makes water taste better.
Just installed this filter and water came out really black. I've installed other filters before but they usually just come out cloudy, not black. The water was black like ink.

Also this filter was falsely advertised. It's listed as on Amazon as NSF 53 certified, when there are no certifications listed on the box, instructions, website or the filter itself as NSF53.