ground water
spring water
well water

But when you are talking about the ground water, it doesn't work quite so well.

"And no one knows what would happen to the ground water."

As a result, ground water is held near the surface.

These depend again on the levels of the ground water.

And there are new issues, like an increase in contamination of ground water.

In places, the ground water is well above boiling point.

Will reasonable steps be taken to protect our ground water?

These can be limited where there is reason, for example in relation to ground water.

No ground water would rush up from beneath the mountain.

And there are real issues to be solved as I understand it, ground water, for instance.