Product review (2 stars): Not helpful if you have a hole house water softner
I have used this one and The Home Depot Brand HDX in my frige. The Home Depot one actually worked a little better removing all the contaminants. I know this because I tested it with a TDS water tester. BUT, both were marginally beter than my tap water. I also have a drinking water fountain reverse osmosis I beleive and it test better than all. even my ozarka water bottles that test at a 24 which is Great number! Tap was about 250 and frige was around 230. waste of money if you have other souces of filtered water.