ISS toilet again...
Again, malfunction!!
The more I think about it, the less I believe humans are meant for space.
Space is like the ocean surface or the air, a medium through which humans travel to go from point A to point B.....The first "B" being the first heavenly body outside the Earth, that is the Moon. Space is not a place to stay, but a passage.
And the faster humans can cross it, the better.
That's after all why spacemen are called "astronauts" !
No such plumbing problems on the Moon or Mars....