Originally Posted by
pdlamb
You might want to check into why the water isn't potable. If there're old mines in the area, it's possible the water contains heavy metals or other inorganic "nasties" at dangerous levels. Standard filters won't do anything to make that kind of contaminated water safe to drink.
High nitrates are another common trigger. Growing problem in my state.
https://www.wpr.org/report-finds-wis...-getting-worse
My comment in a previous post on springs in karst areas that you might think is prestine but might not be potable, I was thinking nitrate when I wrote that.