Product review (1 stars): Removes less then 10% TDS from my water
After testing my water before going through the filter with a TDS meter (Total Dissolved Solids) it only lowered the number by 10%
And did nothing for the taste quality so I'm kinda sorry I bought a twin pack.

Reviews seamed ok enough for me to give them a try but you really do get what you pay for.
I'm going back to the KENMORE brand that actually did remove a much larger amount of TDS and did improve taste quality.