Toothpaste / drinking water could be fluoride-free
Hormones, antidepressants, steroids, antibiotics, pharmaceuticals etc. could be removed from drinking water
Treated sewage could provide water
Water could be extracted from the air, mineralized, and act as a dehumidifier
Animal manure could be disposed of / reused in an environmentally-safe way
Water could be charged by the sun or moon
Shower / tap water could be filtered to not contribute to eczema and other skin conditions
Water could be re-mineralized with salt, drops, containers, or filters
Ozone, UV light, and carbon could treat water instead of chlorine
Drinking fountains could have sparkling water / reusable bottles in vending machines nearby
Drinking spring or mineral water could be good for health
Water could be sourced from the atmosphere
Water could have sommeliers
Water fountains could talk
Food, water, drinks, or condiments could be fortified with micronutrients
Lithium could be added to tap water
Lead poisoning awareness campaigns and preventative actions could happen across the world
An app could be used to find water fountains rather than buying water
