iPad was in contact with a wet surface and won't charge

My iPad was in my bed and I accidentally spilled some water on it, I was half asleep so although it was very little water it probably touched the iPad somehow, either through the damp bedsheet or directly.

The iPad was completely fine, but now it ran out of battery and it will simply not charge. I've tried cleaning the charging port and indeed it was wet, although not too much. So now that I know its not a matter of the usb cable or any hardware from the charger's end, is there any way to fix this problem? Or will I have to take it to a phone repair shop or something?