Product review (2 stars): No Effect on TDS
Water flow is good.
I expected more from these filters.  After installation I measured the TDS using a meter I purchased from Amazon and it read 153 out of the filter and 151 from the faucet so I waited a week and rechecked, this time the measurement was 154 out of the filter and 150 out of the faucet.  I don't see that the filter is doing anything to remove dissolved solids from the water. I did the same test on a friend's refrigerator and found his filtered water was about 20 points below the faucet water.