I just received my new Curios and Relics FFL after not having one for several years. I was just reading every single word on the document and noticed something very interesting.
On the back under "Notices" number 3 states: This license is conditional upon compliance by you with the Clean Water Act (33 U.S.C. 1341 (a)).
I guess I will have to read up on my U.S. code sometime; but I'm sure my water is clean.