China: stick to bottled or filtered water — tap water isn't recommended.
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Stick to bottled or boiled water throughout mainland China — tap water is not recommended for drinking directly, even in major cities.
Extend the same caution to ice as to tap water in China — it's easy to overlook, but ice carries the same risk unless you know it's made from purified water.
Brushing your teeth with tap water is usually fine even where drinking it isn't recommended, but if you want to be extra cautious in China, use bottled water for that too.
Sealed bottled water from a reputable brand is widely available and the simplest safe option in China — just check the seal is intact before drinking.
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