Colombia: tap water is treated but bottled or filtered water is the safer default.
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Tap water is treated and generally safe in Bogotá, but bottled or filtered water is the safer default in Cartagena and other coastal/rural areas.
Extend the same caution to ice as to tap water in Colombia — 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 Colombia, use bottled water for that too.
Sealed bottled water from a reputable brand is widely available and the simplest safe option in Colombia — just check the seal is intact before drinking.
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