Fill a pot and boil it for five minutes. Let it cool. Smell the steam. If it smells like bleach, you have volatile chemicals. If it smells like nothing, congrats. But boiling doesn’t remove heavy metals. It just kills germs.
How to Test Water Quality at Home: Your Complete Guide – World Water
Pro tip: boil water and check for white residue on the pot. That’s calcium carbonate—hard water. It’s safe to drink, but it ruins your coffee maker. Your espresso deserves better.
The Freeze Test: Ice Cube Logic
Freeze a small sample in an ice cube tray. When it melts, look for cloudy ice. That means impurities. Pure water freezes clear. If your ice looks like frosty glass, your water is a little messy.
Weird science: water with impurities freezes at a lower temperature. So your ice takes longer to form. But you probably won’t notice unless you’re an ice sculptor. Which you should be, if you want a cool hobby.
