What are some things we don't know about groundwater depletion?

Answer 1

It destroys / starves / alters the bioculture that is responsible for cleaning this water. It creates sinkholes. It draws more surface water downwards, inclusive of foods, contaminants, oxygen and Biology to make real problems. Ground waters also eventually end up in the ocean, with their nutrients and heat flows, creating or terminating important ocean currents. It is caused by lack of viable Birth Control, and a fear of drinking the urine of an animal we see, versus one that urinates somewhere else we can't see. No amount of processing can satisfy the "prissy" in us that the water is somehow safe to drink.