Water

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Every profession, especially a niche field like drilling, has tricks or jargon that everyone assumes everyone else knows. But, if you missed it during training, specialty knowledge veers quickly into "too embarrassed to ask" territory.

The driller has to not only find and identify the producing formations, he also has to minimize damage to the formation.

Looking at a water map of the U.S. recently, I noticed that most of the Great Lakes states — which include Michigan, Ohio, Indiana, Illinois, Wisconsin and Minnesota, plus the non-Great Lakes state of Iowa — all have groundwater that is classified as very hard.

There's undeniably a crisis affecting large swaths of the U.S., and a lot of urban and suburban Americans don't see it.