the water you are speaking of is not really spring water. when i speak of spring water i am using viktor schaubergers definition, which is water that has spent literally years seeping thru bedrock before emerging into an underground chamber and then being forced up to the surface once enough pressure had been created.
you are talking about groundwater, which is a completely different animal. with ground water it will be as clean, or dirty, as the ground its sitting in. so it varies greatly from place to place. also it hasn't travelled thru bedrock, so its not fully infused with the subtle earth energies that fully enliven true spring water.
a lot of well water is just ground water seeping into a deep hole, this is not the same as spring water. the well water that comes from ground water could be wonderful, or it could be terrible, it totally depends on the immediate environment.