EVERYTHING on Q is aluminum… including the water tank. We prefer to not drink from an aluminum tank.
Instead we found an otherwise useless space to install a Plastimo PVC bladder with a separate hand pump. This tank can be filled directly from our water-maker… or from a deck mounted access pipe.
This worked extremely well for a couple years… but we did not store the bladder properly last season… and this year it has a plastic taste. We have added a new bladder to our shopping list… and will clean it better at the end of next season.