It would simplify everything if it were so. We should survey the potential resources, prove them up so to speak. It's anybody's guess how many survey-bots would be needed for the survey, more than one most likely. But each water-bot need not be expensive. For the cost of one Space Shuttle flight it should be possible to send a dozen water-bots, maybe all on one flight. And if they find significant water, no one would be happier than RightWhale.