Here's the scoop. When the pool was built, I asked the builder about bonding. They DID NOT use any kind of grid in the concrete decking, just a heavy gauge copper wire around the pool, behind the coping (it's a vinyl-liner pool) and connected to the ladder, hand rail, pool light and diving board. It was a continuous wire that then ran to the pad and pump. They assured me it was properly 'grounded' (his word) by connecting it to a grounding rod they drove into the ground near the pad. Also connected to the same wire was the booster pump and then a line ran up into the timer box/circuit breaker panel for the pool. I knew this was grounding, not bonding, but thought 'they've been doing this a long time, they must know'
Well, guess what? There's a tiny voltage between the water and deck that you can feel (if you have a hang nail or small cut on a finger when you reach into the water while standing on the wet pool deck, for instance). Most times you wouldn't notice, but it's there.
Now what? Can anything be done short of breaking up the deck and doing it over, correctly?