Potable drinking water is not, in general, sanitary so rinsing would leave the item unsanitary. But, would leave any/enough bugs to hurt your beer? Don't know....don't want to know.cubbies said:and I personally doubt the ramifications of rinsing it. I dont think that tap water is so full of bugs that rinsing off the foam would be counterproductive. I bet it would still be sanitary. What do I know though?