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Can I drink tap water in Korea?

Answer status
YES IN SEOUL, CHECK YOUR BUILDING

Quick answer

Seoul’s tap water, Arisu, is tested on 350 quality items and the city says it is safe to drink. The water in your tap also depends on your building’s pipes and tanks, so bottled or filtered water is a common choice.

What you should know

  • The Seoul Metropolitan Government says Arisu is highly safe, with no detectable contaminants in nine categories including lead, arsenic and cadmium.
  • Arisu is tested on 350 criteria items, twice the number in the WHO standards, according to the city.
  • The city’s statement covers Seoul’s supply. Plumbing inside a building can change what comes out of the tap, and other cities have their own water systems.

Common mistakes

  • •Assuming a statement about Seoul covers every city and building

Alternatives

  • •Bottled water from a convenience store
  • •Filtered or boiled water
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Official sources

The source is the Seoul Metropolitan Government and covers Seoul only.

Last verified: October 3, 2026

Rules, prices and policies change. Confirm important details with the official sources above before you travel.