40 years ago it wasn't at all uncommon to be driving down the road and see a spring where people stopped to get water. Often these had been used since time immemorial, and some were once used to bottle water. (My father had one of these on one of his properties.) Now most of them have been capped, and if there is one available the landowner is responsible to have it tested every year. I had one dug out on my property and when we hit ledge the water was boiling out in three places. During a drought I pumped 10,000 gallons of water out of it before it went dry. Yet it failed the water test, and I never tried to fix it.
One thing that I have and should be carrying is a water filter; I can put a quart of unclean water in and it will (supposedly) come out the other end clean.
One thing that I have and should be carrying is a water filter; I can put a quart of unclean water in and it will (supposedly) come out the other end clean.