Absolutely. AFAIK there have been no floods here. I get snow but the underground well room is covered with a heavy concrete cover. My home is much higher tha

Absolutely. AFAIK there have been no floods here. I get snow but the underground well room is covered with a heavy concrete cover. My home is much higher than the fields around me. That said I have no idea if there are any volcanic passages that would allow unfiltered ground water to reach the well. The mineral and bacterial tests would suggest that is not occurring.