It's almost a year and Rocky has never drank from his water bowl...well maybe once.
At this point, the humidity isn't impacted and it's very rare that it does so in the summer. I use a shallow bowl and Rocky does stick his foot in it while attempting to exit the enclosure.
Rocky receives baths weekly so he is hydrated.
I haven't kept a water bowl in my habitats for years, if they don't use them there isn't really any point.
I just give them water with a dropper every little bit.