Are you moving to becoming more self sufficient? If so consuming enough of the livestock stock that has consumed the higher arsenic levels in the water may result in high levels for you. Adults can handle higher levels of arsenic than children. Arsenic is a heavy metal very similar in effects like lead, mercury and cadmium. The only good thing is that unlike the other heavy metals, our body can metabolize arsenic and eliminate it.
If I had children I would proceed with caution.
If I had children I would proceed with caution.