Yes, boiling water does purify it—mostly. A rolling boil for one minute zaps most bacteria, viruses, and parasites. Think of it as a sauna for microbes; they can’t handle the heat.
But here’s the quirky catch: boiling doesn’t remove chemicals or heavy metals. If your water looks like a toxic sludge smoothie, you’re just making hot toxic sludge smoothie. Boiling kills life, not pollution.
Fun fact: At high altitudes (like a mountain summit), water boils at lower temperatures. That means you need to boil it for three whole minutes. Don’t get greedy; altitude sneaks up on your germs.
The Germ Graveyard
When water hits 212°F (100°C), it’s like a mic drop for pathogens. Giardia (the “beaver fever” troublemaker) and Cryptosporidium (a stubborn cyst) both throw in the towel. These guys survive in lakes, rivers, and even your friend’s questionable well.
Boiling denatures their proteins. It’s like scrambling an egg, but for tiny monsters. They can’t reproduce, infect, or annoy you anymore. Good riddance.
One weird detail: some bacterial spores are tough cookies. They can survive boiling, but they rarely cause issues in healthy humans. Your stomach acid is a backup bouncer. Gross, but true.