The test would be finding a spot where a witcher says there isn't water, and then drilling there.
There's water almost everywhere in the ground -- the questions are is there enough of it to meet the need? is it usable (ie: not contaminated with salt or toxic chemicals)?
There's water almost everywhere in the ground -- the questions are is there enough of it to meet the need? is it usable (ie: not contaminated with salt or toxic chemicals)?