Notes:
The "cleaner" is the equivalent of a shower. As there isn't much fresh water on Mars, domestic use of water is limited.

The bar seen in the middle of the cleaner move up and down while spraying the user with a natural chemical solution, then washing with a water spray. The body still gets a bit wet, hence Jemma's towel...

The toilets are also water free. Smartcloth clean itself, so there is no real need for washing machines.