I have a filtered water dispenser in my Whirlpool refrigerator door. Lately I've noticed when dispensing water into a clean glass, that there are patches of a thin transparent film suspended in the water. The filter cartridge is about 3-4 months old.
I suspect that I'm seeing a thin layer of mold, slime, or other growth peeling off from somewhere within the refrigerator's water line.
I'm looking for guidance on what this film is, and how to deal with it. The filters are rather expensive and I'd rather not drop a new one into the refrigerator if that's not likely to eliminate the problem.