Just my 2 cents. I used to repair VCR's (yes, that's how old I am) and you'd be surprised how many people used to put plants on top of the box. Of course, when they watered the plants, the water would inevitably drip down onto the VCR and get on the circuit board.
The problem with plant water is that it has fertilizer and when it hits the board the liquid is acetic enough to etch the copper. Needless to say, 99% of the time, the unit was a basket case. That's why salt water from the ocean is very bad. The chlorine in a pool is, undoubtedly reactive with the copper too. If it even works now, it will probably not in a short amount of time. You should also take the battery out immediately after the accident. The power flowing through the board is what causes the chemical action on the copper.
The best thing to do is wash/soak the unit in fresh distilled water, rinse dry and blow it with a warm, not hot hair dryer until it's mostly dry. Then put it in plastic bag with a desiccant. (You've seen them, they come packed in a new camera bag to keep it dry). Rice may work too, some say. The sooner the better. The etching action starts immediately. And the more you can take it apart, the better to get most of the water out. If you act quick, you may just get your camera back.
But, all in all, it is a crapshoot. I do know when an automobile gets dunked/splashed in seawater, it is immediately considered a total loss. There are many pieces of electrical equipment, like scopes, etc, that get washed out with soapy water, rinsed and then put in an oven for a few hours to dry it out. Freaked me out when I saw them do this, but it works fine.
