I'm sure some of you use the Petmate waterer and wonder if you've noticed what I have experienced recently?

When I replace the charcoal cartridge I always rinse it well and I rinse it when I do my daily cleanings.

I've used the thing for several years and all of a sudden there is a black residue in the water when it runs. Jeff said it was 'charcoal dust' and is harmless. I can dip a paper towel in the water and it clings to the towel and I can remove it, but I can't figure out why it's doing this all of a sudden. I've tried a new cartridge, but get the same thing.

I wonder if the company has changed something?

It might be harmless, but it looks nasty!