Aw Pete, you're so full of crap. I just hung up with the building inspector and he said he didn't know a thing about you building a gigundous water tank in your home.
Of course he knows now...said somethin' 'bout stoppin' by later this week with the head building engineer and somebody from the health department. Not to worry. He couldn't find the required permit on file but he said to just make sure that you had it ready for him when he got there, along with all of your inspection stickers of course. :uhoh: