I would never put a puppy 8 hours in a bench without water!! If they are thirsty, he should be able to drink!
That may work for you in Belgium, but a dog can live without water for 8 hours, as can a human.
What goes IN must come OUT.
Giving them the water and expecting them to hold it at such a young age is a set-up for failure.
If they learn to not pee in the crate because they don't have water… they will learn that the crate stays dry and it is nice to have a dry crate.
Perhaps you have trained more puppies than me... but this works. Period.
I have done this many many many times and the dogs don't have an issue with it.