Thanks, Adriana - Frank never voluteered this information and one never likes to probe too deeply in Greece in case what you're asking about is something bending the law and too much curiosity might cause offence! Not of course that I have any reason to suppose that Frank himself is anything other than the upright and conscientious citizen that he puts across.
Next time I'm there I'll ask him about the water and give him a chance to boast about what he's done!