Hey again

Your SWCG has no bearing on the ground water issue (but I think you made a great! choice in getting it.()

Being lower than your neighbors sends a lot of run-off towards your pool and your clay soil exasperates the problem

Your best option may be to install curtain drains at ~ the bottom of the slopes going into your lot and maybe even a couple of well points closer to the pool, to insure that the water can't collect around the pool.

p.s. your PB probably meant well, just didn't figure in the water problem i.e. - he wasn't 'malicious', just clueless