Dogs aren't that different from in some ways.
People eat and drink emotionally, and so do dogs. Just like you might go to the chocolate if you're in a kind of iffy place emotionally, Crede might be going for the water bowl.
My Rusty was an emotional drinker--yes, I know how that sounds
. He didn't have classic separation anxiety, but if we took him with us to to spend the night with Gran or left him with my aunt overnight to go camping or something, he would drink the toilets dry, he would go out and lick the sprinklers, he would go in the kitchen and jump up on the counter and drink soapy DISHWATER. It was fine to go visiting for a few hours, but if he thought that he wasn't going home, he'd hunt down the nearest water source.
And after all that drinking, he'd submissive pee every time you tried to comfort or calm him. The combination of emotional drinking and submissive peeing meant that Rusty was NOT a popular doggy guest.
As soon as would take him home, his whole behavior shifted back to normal. He was just a homebody dog that didn't like being out of his comfort zone.
I would definitely make sure that there's nothing physically wrong with Crede, but keep in mind that your home is still new to him, and it might take a few weeks for him to stabilize emotionally. He's still a baby and has been through separating from his mom and sibs, having a first family, leaving that family, a rescue and now your house! Imagine how you'd feel if all that happened to you in such a short time!
I know I'D be searching for the Godiva Chocolates store if all that happened to me
Just use a 'timed' water ration plan that cuts him off a good 3 hours before bedtime. Of course, then you have to be sure you don't roughhouse with him after he's out of water for the day, but hopefully as he adjusts you'll be able to taper off the rationing plan.
You're not doing anything wrong. You're just learning, the same as Crede.