Facility to dump grey and black water. There are 2 water taps. The one on the left works. We filled our tank but didn't use it for drinking water as the place is so filthy.

Availability of drinking water loading and draining gray and black (also nautical on the grid) totally free

It's a shame that something like this can be made for the time and money invested. Just made a tube for black water and a gutter for gray water. now it is there on a grid and 50 meters further the people are lying on the beach. But we're done with it. Also tap water available.