Demographic Impact
Water doesn't affect everyone the same way. Tailored explainers for children, pregnancy, pets, indoor gardeners, and aging adults.
Water and plants: indoor gardeners, hydroponics, lawns, and what tap water does to growing things
Chlorine evaporates. Chloramine doesn't. Hard water leaves white residue. Fluoride yellows the tips of spider plants. Here is what actually happens when you water plants with municipal tap water — and which of the gardening internet's most common claims hold up.
Water and the home: scaling, corrosion, appliances, and what your water is quietly doing to your house
Hard water shortens the life of your dishwasher. Acidic water eats copper pipes. Chloramine perishes rubber seals. Here is what tap water is doing to your home — and the actually-useful interventions vs. the upsold ones.
Water and pets: what the dog and cat are actually drinking, and where the evidence is thin
A 60-pound dog drinks about 60 ounces of tap water a day. Over a 12-year life, that's roughly 50,000 gallons of municipal water. Here is what we actually know about how contaminants affect pets — and the much larger list of what we don't.
Water and adults: hydration, cumulative exposure, caffeine interactions, and the contaminant calculus when you have decades of drinking ahead
Adults metabolize most water contaminants fine in any single glass. The relevant question for adult health is what 40 years of low-dose exposure adds up to. Here is what the evidence shows on hydration, the actual interactions between water and caffeine, and the cumulative-exposure calculus that matters for chronic disease risk.
Water and babies: the formula years, the boil-water trap, and the contaminants you cannot afford to overlook
Between birth and six months, an exclusively bottle-fed baby drinks more water per pound of body weight than at any other point in a human life. The margin for error on that water is essentially zero. Here is what the data actually shows, by exposure, and what the most important decisions are.
Water and children: what changes when the consumer is 8 pounds, 80 pounds, or somewhere in between
Children are not small adults. Their water-borne contaminant exposure per pound of body weight, their developing organ systems, and their behavioral patterns make several specific contaminants disproportionately dangerous. Here is the demographic-specific science, by life stage.