On my 2017 the water pump is under the kitchen sink behind a short false wall. The pump even had a hose attached for winterizing. The location is pretty much directly above the fresh water tank. As far as the drain goes, yes you should have one. I can access mine from the door side of the camper and I can see it if I look under the camper between the fridge and the front door. If you can’t find it my guess is the underbelly wrap wasn’t cut to expose it. It may take some feeling around!
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