
Matisian living dwellings make sewerage disposal clean and easy, but drinking water and general plumbing is a bit tricky. The Fyros avoid all problems of this nature by using a communal pool, for everything.
including parking mekkies, although if you leave them in there too long their hide starts to rot.
I have mentioned elsewhere how the Fyros invented 'burning' weapons, so they would know which end points away from them.