I have a water distiller which I fill up with tap water and it takes 6 hours to produce a gallon by evaporating the water that then goes through a filter. Cost

I have a water distiller which I fill up with tap water and it takes 6 hours to produce a gallon by evaporating the water that then goes through a filter. Cost me around $200 and I get to see the remaining contents from the tap water at the bottom of the distiller. I believe it uses 20 cents of energy to produce a gallon. It's cheaper than bottled water and more environmentally friendly (no plastic). Some will say, I miss out on minerals from the water but I believe that my diet covers them.