I just cleaned our ice machine.
It needs to be clean always. I normally do every month.
We see so many moss when we open the cover.
Yes, this is dirty and moist place.
I think I am a kind of good person and try to clean it.
But some places are lazy and they do not clean at all.
That is one of the reason I do not drink any of tap water.
I trust bottled water. But I do not drink Dasani.
I like natural spring water.
Anyway, our ice is clean and safe.
Ask someone who owns restaurants. How often they clean ice machines?