Product review (5 stars): As I began to run the 2 1/2 gallons recommended to flush the line
I was a bit nervous about replacing my Kenmore filter with this "generic".  As I began to run the 2 1/2 gallons recommended to flush the line, I grew even more nervous.  The first pitcher was rather "charcoal" in color.  The second gallon was much cleared and the third looked like good water.  I tasted it and it seemed fine.  After waiting over night for the water to cool, I was delighted to find the water to be perfect!  Next time I will order the two-pack to take advantage of my Prime.  As a bonus this is manufactured in the USA.