Ive been doing a lot of resarch on the net about testing, and looks like the only hting water does for you is speed up your metabolism.(other then the day before/morning of testing). Working out/ using water to dilude your piss is about all you can do. I got my tested delayed until the 10th. So ill let yall know how i did when i find out. (33 days w/out weed, I BETTER PASS!!!)