I've dropped cell phones and digital cameras into mud puddles and had success drying them - I just opened them and let them sit on towels for a few days.
On the other hand, I dropped a phone into a sink full of water and permanently murdered it.
I suspect it may be a matter of how wet your phone got, and how long it was in water. If it was literally a quick dunk and not the entire phone, you'll probably be all right.
Open it up as much as you can without disassembling it - put it between some towels - flip it over every now and then. Not a very technical response, but it might work for you.