The planet is hot and dry. The only water left is hidden deep under the dead crust. This nomadic colony tap into ancient wells scattered across the planets surface with a large, floating station similar to Earths oil and gas platforms. This well has a healthy supply of fresh water, they will be able to stay here for many months, maybe years.
On cool evenings like this many of the occupiers prefer to sleep under the twin moons…it will be hot again tomorrow, too hot to be outside.