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They do put chemicals in tap water.
I know l had to boil it when l was in taiwan.

So, you mean by only boiling you can avoid chemicals. Interesting.
You need to pick up your science books again, 😉

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We all do. Some chemicals have high vapor pressure and can be boiled off faster than the water!

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I see.
Now you see and read it.

Boiling water can only remove solids and bacteria, meaning it will not remove harmful substances such as chlorine and lead from tap water.
https://mytapscore.com/blogs/tips-for-taps/should-i-boil-my-tap-water
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This is wrong.
Chlorine evaporates when you boil water.
It even evaporates when you just let water sit, but takes longer.

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