Product review (1 stars): Don't trust this product to deliver something you can drink.
Plugged it in and it tried filling my glass and it started spewing black water.  I tried to unplug it and it leaked water all in my fridge.

I saw some similar reviews, but a lot of people were happy, so I thought I'd try it.  Even if it doesn't spew enough carbon to turn it black, I wonder now if some wouldn't be getting through even with those people who think they got a good product? Could be toxic.