Sounds like they installed a french drain. I was worried about relying on a sump pump alone until I read that part. Water pressure that is high enough to make a little spring fountain in your basement is probably high enough to completely heave your basement floor and/or walls. French drains are magical.install drainage pipes and process( small rocks under and above the pipes for the water to drain into the pieps)
I'm assuming that the ground around your home is level or even upslope on one or two sides?