Charcoal is a master at removing chlorine, which makes your water taste like a swimming pool’s bad decision. It also gobbles up volatile organic compounds (VOCs)—the things that make water smell like a chemistry lab.
It’s shockingly good at removing bad tastes, too. If your water tastes like plastic or dirt, charcoal says, “Not on my watch.”
Charcoal Water Filter Tutorial Make Your Own Filter - Asgard Media Inc
But here’s the funny letdown: charcoal is useless against fluoride, heavy metals, and germs. It won’t stop lead, arsenic, or bacteria. Trying to use it for that is like bringing a sponge to a gunfight.
The Surprising Science (and a Little Chemistry)
Why does it stick so well? It’s called van der Waals forces—fancy physics for “molecules really want to hold hands.”
The charcoal has a slight electrical charge. The nasty chemicals have the opposite charge. They literally zip together like a tiny, invisible zipper.
This isn’t a filter that lets water pass through holes. It’s a chemical party where the bad guests get glued to the walls.
