Product review (1 stars): Bad Taste
I purchased a 3-pack of these last year, and the first filter I used was fine.  The second filter made the water taste terrible, especially after it sat in the cup/glass for more than 10 minutes.  It was totally undrinkable!  So, I tried the 3rd filter, and same thing, horrible taste (like strong chlorine.)  Not sure how the first one was okay, and it's way too late for me to return.