5 of 6 people found the following review helpful
Seems to do the trick,
Amazon Verified Purchase(What's this?)
This review is from: KitchenAid KCM22WF Water Filter Pod - 3 Pack (Kitchen)The filter really does seem to do something, for when I'm not using them the pot's "clean" light turns up every couple of weeks. When using, I often end up doing the monthly cleaning before the pot tells me to.
I just use city tap water. I suppose depending on your water quality you could get by without these. I'm not a big enough coffee connoisseur to be able to tell a difference in my coffee's flavor.