NSF at least certifies their claim. That's a surprisingly small volume of water though. I also don't love how private they are about what the filter media is.

NSF at least certifies their claim. That's a surprisingly small volume of water though. I also don't love how private they are about what the filter media is. https://info.nsf.org/Certified/DWTU/Listings.asp?CompanyName=Hydroviv& https://info.nsf.org/Certified/DWTU/Listings.asp?CompanyName...