Water spill on keyboard

when it comes to liquid spills on your Mac, I always recommend a trip to an Apple Store or an AASP and have the Mac evaluated. even if everything is still working properly now, liquid damage could present itself sooner or later. better to be safe than sorry.

If just water it will dry eventually. Do not use for a period of time. Modern circuit boards are coated so probably no issue when dried out. If it was another liquid I might be worried.