Water by what you use it for

Most people arrive with a practical question rather than a parameter name. These start from the use and work back to the numbers.

• Water for Coffee & Espresso MachinesWhy the same beans taste different on different water, and which numbers actually decide it.
• Water for Black TeaWhy the same teabag makes a different cup in London and Manchester, what the film on the surface actually is, and how the British tea industry solved it by changing the tea rather than the water.
• Water for Green TeaGreen tea is the one that degrades rather than just tasting different: hard, alkaline water measurably destroys its catechins and browns the cup. What the research shows, and what Chinese and Japanese practice has said for twelve centuries.
• Shower Water, Skin & HairWhy the same soap behaves differently in different houses, and what actually causes tight skin and dull hair.
• Water in Your PipesWhat your water is doing to your plumbing, and what your plumbing is adding to your water.
• Distilled, RO & Deionized WaterHow distillation, reverse osmosis and deionization each strip water down, what each one leaves behind, and why all three test acidic once they meet air.
• Alkaline & High-pH WaterWhat high-pH water is, what the health claims rest on, and when a high reading is worth acting on.