South Korea

Seoul's tap water is treated to international standards and is generally safe to drink; many visitors, however, choose bottled or filtered water for taste. You can safely brush your teeth, shower, and use tap water for ice and washing produce.

Busan tap water is treated to meet national standards and is generally safe to drink; some visitors prefer bottled water or a filter for taste. You can safely brush your teeth and use tap water for washing fruit and ice, but carry bottled water if you are sensitive to a slight chlorine taste.

Tap water in Incheon is treated to strict standards and is generally safe to drink and use for brushing teeth; ice is safe. If you are staying in an older building or have a sensitive stomach, consider bottled water or using a hotel/room filter.

Daegu's tap water is treated to national and international standards and is generally safe to drink; many residents use household filters for taste. If you have a sensitive stomach or prefer better-tasting water, opt for bottled or filtered water.

Gwangju's tap water is treated to national standards and is generally safe to drink straight from the tap; most visitors can drink it without issue. If you are staying in an older building or have a sensitive stomach, use bottled water or a personal filter as a precaution.

Tap water in Daejeon is treated to meet national and international standards and is generally safe to drink; bottled water is optional. If you have a sensitive stomach, use bottled or filtered water as a precaution.

Suwon’s tap water meets national and international standards and is safe to drink; many visitors still prefer bottled or filtered water because of a mild chlorine taste. You can brush your teeth and wash produce with tap water, but carry bottled water if you’re sensitive to taste.

Ulsan's tap water is treated to national standards and is generally safe to drink, brush your teeth with, and use for washing produce. If you are sensitive to chlorine taste, use bottled or filtered water for drinking.

Goyang's tap water meets national and international standards and is safe to drink; many visitors still prefer bottled or filtered water due to a mild chlorine taste. It's fine to brush your teeth and wash produce with tap water.

Tap water in Changwon meets South Korean national standards and is generally safe to drink; most locals drink it. Bottled or filtered water is widely available if you prefer.

Tap water in Seongnam meets national and international standards and is generally safe to drink; if you are sensitive to taste, use bottled or filtered water.

Bucheon's tap water meets national standards and is generally safe to drink, though many locals use in-home filters; if you are sensitive to taste or staying in older buildings, consider bottled or filtered water.

Cheongju's tap water is treated to national standards and is generally safe to drink; you can use it for brushing teeth, ice, and cooking. If you prefer a milder taste, bottled or filtered water is widely available.

Generally safe to drink. If you're sensitive or staying in an older building, consider filtering for taste.

Tap water in Ansan is treated and generally safe to drink, though you may notice a mild chlorine taste; bottled or filtered water is fine if you prefer. It is safe to use tap water for brushing teeth, ice, and washing produce.

Cheonan's tap water is treated to national standards and is safe to drink; if you prefer, buy bottled water or use a portable filter for taste. In restaurants you can usually request tap water, but some places serve bottled water by default.

Jeonju's tap water is treated to meet Korean and international standards and is generally safe to drink; if you have a sensitive stomach or prefer a different taste, use bottled or filtered water.

Anyang's tap water meets South Korean standards and is generally safe to drink, but many locals use home filters because of chlorine taste; if sensitive, use bottled or filtered water. For short stays, bottled water is a convenient option.

Pohang's tap water is treated to South Korean standards and is generally safe to drink; if you prefer taste or extra peace of mind, bottled water and filters are inexpensive and widely available.

Tap water in Pyeongtaek meets South Korean standards and is generally safe to drink, though some visitors prefer bottled or filtered water due to a mild chlorine taste. Carry a small reusable bottle if you plan to refill, or buy bottled water if you prefer no chlorine flavor.

Excellent natural spring water — drink freely from the tap.

Masan's municipal tap water is treated to national standards and is generally safe to drink, though you may notice a mild chlorine taste. If you prefer, use bottled water or a simple filter for taste reasons.

Siheung's tap water is treated to national standards and is generally safe for drinking, brushing teeth, and ice. If you prefer a milder taste or are staying in an older building, use bottled water or a portable filter.

Tap water in Uijeongbu is treated to national standards and is generally safe to drink; many visitors buy bottled or use filters for taste. You can safely brush your teeth, use ice, and wash produce with tap water.

Tap water in Paju is treated to South Korean standards and is safe to drink; bottled water is optional if you prefer taste or a familiar brand. Carry a reusable bottle to refill at cafes or taps in public buildings if you prefer to avoid single-use plastic.