Peru: stick to bottled or filtered water — tap water isn't recommended.
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Stick to bottled or filtered water throughout Peru, including Lima and Cusco — tap water is not recommended for drinking.
Extend the same caution to ice as to tap water in Peru — 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 Peru, use bottled water for that too.
Sealed bottled water from a reputable brand is widely available and the simplest safe option in Peru — just check the seal is intact before drinking.
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