BL doesn't allow these types of questions, but I had a similar situation where I sucked on a used cotton 3 days after using heroin, and it came up as .0000002 or something like that....that was a big, fancy expensive test though...whether it would be enough to trigger a cheap panel test is anyone's guess....You could drink the water, and if you get accused of dilution, piss again and you'll probably be clean...that's really all I can say...This thread will be closed soon...