Why Water Chemistry Advice Online Is All Over the Place

Send us Fan Mail I can't hand you my water, and nobody else can either. My tap tested at 273 ppm the other day. Yours might be 150, or 100 if you're lucky, and even then neither of us knows what minerals are actually in it. So when you go looking online for the right water, you get one opinion, then another, then another, and you end up more confused than when you started. What water did they start with? What kind of coffee do they like? Are they trying to sell you something? Here's where I'v...