The dehumidifier and sump pump guys created a channel around the basement perimeter with drainage pipes buried in gravel then sealed over the entire floor with a thick mil plastic. Water goes directly to the sump pump well as does the dehumidifier's pump/hose. Really don't know how it could be made better within reason. Like i say when it all works everything is fine.If it was well done, you wouldn't be having any problems.
The walls can be somwhat fixed by excavating to the footers, and using actual waterproofing materials. Its still impossible to stop the water from soaking into the footer and rising up into the wall though.
You're kind of screwed on the floor, without putting down dimple mat, a water proof layer, and pouring a couple inch slab on top