Is the tap water safe to drink?

这自来水喝了不会闹病吧？

《牛津词典》

In Japan, if you turn on the tap, the water that comes out of it is perfectly safe to drink as is.

在日本，水龙头里的水接出来就可以直接喝。

youdao

Don't buy bottled water if your tap water is safe to drink.

不要买瓶装水如果你的自来水可以直接饮用。

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Robert Durand, a spokesman for the prison, said prisoners are provided with bottled water and that the tap water is safe to drink.

NPR: Striking Guantanamo Prisoners Say Water Denied