Realizing that I'm 70% water, I considered this my most important investment in ME. I readReadREAD, i pondered, I even prayed about this one!
Finally, it dawned on me that God made water and He made it H2O. What gives you H2O with no additives? A distiller! I ordered a Waterwise 9000 and started distilling my own. I do not drink enormous amounts of plain water. I put 1 drop of wild Turkish oregano in each gallon, I put a very sparce pinch of Sea Salt in every glass full, I use it to make hot lemonade that I drink instead of coffee now and to make herbal teas. (btw, I threw away the carcoal filter that came with mine ... What do I need to filter out of steam????)
My understanding of the minerals that distill water leaches from the body is that it's only minerals that the liver has in storage (in the joints causing things like Arthritis ... in the veins causing things like hardening of the arteries ... etc etc etc), that you cannot leach out minerals that are being assimilated by the body.
My understanding of reverse osmosis is that the straining of the water through membranes can cause molecular distortion. This might be ok for bathing and washing clothes, but I'd just as soon not drink it, ty.
ALL filters add things to water, so consider carefully ... investigate carefully.