Product review (1 stars): NOT NSF APPROVED for "Filtering"
We are returning these products as they didn't filter as we had a water tester and it didn't make any difference from the tap water from our house.  So I did a little digging.  After reviewing online for Ecolife & Waterdrop they had no results of testing on their filters.  We also looked up the NSF item for and the only thing they are certified for is for the "structural integrity requirements only" - all the other ones had "filter requirements" - This is deceiving as they can use the Stamp from NSF because they pass for one of the many things NSF requires but not the main item you are buying the product for.  We are returning.