I filter my drinking water, and tried it in my coffee maker, hmmm, no difference here, I do believe we have good water but I am spoiled to my filtered refrigerator water for drinking, or bottled water
I'm supposed to be using the filtered water but I usually early use tap water. It all tastes the same to me.
Once she's up, I switch to the filtered water. She can see me in the kitchen from where she sits, and I'll get the :mad: if seen.