It's called CALCIUM. Probably in the line to the fridge or all your
pipes. It's not harmful. In fact it's good for you.
If it really bothers you, I believe they make cartridge filters to put
in the line to the fridge, but you have t change them regularly.

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On 12 Jan 2006 20:35:32 -0800, wrote:

After reading multiple discussions and websites about the possibility
of certain refrigerator reservoirs breaking down in chlorinated water
causing tissue-like little flakes in the chilled water, I dished out
the bucks and ordered a new coil-type reservoir and installed it.

Well, weeks later and after countless gallons having been run through,
I see no difference. Flakes.

When I took out the old reservoir, I emptied it, filled it with water,
shook it out, and inspected the water that came out. No flakes.

The flakes for me are not coming from the reservoir. I don't have or
need a filter, so they're not coming from that either.

No solution yet, but at least I know it wasn't the reservoir.