tim halligan wrote:
It's my understanding that distilled water is fine.
The bitter enemy is salt water.
Salt water is indeed a bad thing. Distilled water is a good thing. Regular tap water might or might not be OK, depending on where it comes from and how it's processed (assuming you aren't dipping it out of a well or a creek). The amount of chlorine and fluoride that most municipalities put into potable water isn't going to hurt your electronics, but sometimes calcium or metallic impurities like iron are left in (since they don't hurt humans) and these can leave a conductive residue on unprotected circuit boards and contacts that can cause trouble, usuallly a few months to years on.
A purified water rinse is usually a good idea to clean off whatever the tap water left behind. So you can wash your console in the bath tub, just get a jug of grocery store filtered or distilled water over it afterward. Holy water might help, too. ;)