Basically, if you remember "tap water is not drinkable without boiling", you won't get sick caused by water contamination.
In addition to it, it's scientifically shown that pool water is more polluted than water in toilet.
So, if you swim in pool, you must keep in mind that so as not to drink it easily.
We can not tell how water is polluted by how it looks!
Diary of a rail fan in Kansai,Japan(Ver.2)
About world's rail news, general news, my train pictures, and travel diary)
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