Well water and electronics usually means one thing, it's dead. NEVER turn on wet electronics until they've had at least a week to dry out. More than likely it was fried the second it was turned on.
Youll have to contact Akai and find a service center that can fix it for you.
Bug reports & end-user tech support for Akai's generation of MPC Software 'controllers' - MPC Touch, MPC Renaissance & MPC Studio.