en1mal t1_j689ne9 wrote

Yeah "water purity" is a grey zone, lots of scams. When I was young I earned some cash as a handyman. The stuff some people wanted me to install in their water system was baffling. Especially since I live in an european country with probably the best tap water quality in the world.

edit: just watched the vid, hillarious, they are just disolving the toxic metal particles in the water holy moly and use distilled non conductive water for the "proof". Yay humanity!