After a couple days of boiling filtered refrigerator water in our electric teapot a white powdery residue collects in the teapot filter & in the bottom of the teapot. If I use unfiltered tap water, the white residue does not appear.
This had never occurred until about 3 months after we purchased our new whirlpool refrigerator. The new frig uses a UKF8001 PUR Filter. After noticing this white residue I installed a new filter in hopes it would clear the problem – but to no avail. I’ve flushed the refrigerator water lines to ensure they are clean.
My concern is that since unfiltered tap water does not produce the white powdery substance, the PUR filter might possibly be causing the residue. Perhaps the residue is only a harmless mineral –but I thought I would ask the opinion of other more knowledgeable than me.
Thanks for any comments