Careful going too low sodium. And high fiber + dehydration can result in constipation. That said, it sounds like you may well be getting a good amount of water from the vegetables themselves, depending on what form you're eating them in.
raw only, for example today: peppers, tomatoes, dates!, grapes, mushrooms, leeks, onions. (leeks and onions, I try to let them ferment a bit). Sometimes a bit of rice (only thing cooked I eat)