Product review (1 stars): It is better to have the one that adheres to both 42 ...
My water tastes awful with this filter.  It only removes half the contaminants of my previous filter.  Also, the water ran blue for pitcher after pitcher when I first installed the filter.  I never had that happen before with the more expensive filter.  I think this is a case of you get what you pay for.  This filter only adheres to NSF/ANSI 42 standards.  It is better to have the one that adheres to both 42 and 53 NSF/ANSI standards.  I am buying a better filter today.  I want this out of my refrigerator as soon as possible, and in the meantime, I will be drinking water from the faucet.