I drink purified water because of my uncertainties about the municipal tap water. It most likely contains PVC,Lead,Copper,Medications etc. However, every time I relieve myself I'm losing all of those electrolytes and minerals!. I can't eat 4000 calories a day to keep up(but I do take some Alive multis and a few other supplements). So I saw this 'recipe' online and thought about giving it a go. Let me know what you think, need a second or third opinion.

How to make Mineral Water. Mineral water recipes.

I also plan to use ALL NATURAL epsom salts:
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