By the way, for all those people that SWEAR by dilution. There's a little thing called WATER INTOXICATION -- not only do you overload the body with water in small amounts of time but in the process, you dilute the body's natural levels of electrolytes and essential elements needed to regulate normal body function. People have DIED from water intoxication -- pro atheletes and I've even heard of frats doing it as hazing.
If you're looking to dilute -- PLEASE be careful. Take vitamins like Centrum that compensate for the levels that you dilute.
Passing a drug test isn't worth your life.
Especially when you could... oh, I don't know .... SUBSTITUTE.