possible water in my gastank.

I havent driven it at all, just put some of the drygas stuff in it, but now i got a dead battery for some reason, or i think my ignition switch is dead idk. i turn the ignition to the left and i got 11v, turn it to the right and i got less then 10 and the starter wont turn, im probably going to jump it, but there has been some weird stuff going on electrically lately. i have to move wires around behind the ignition switch to get it to do anything, idk. this will probably be a different thread if i dont figure it out in the next few days.