Tap Water In Korea: Is It Safe to Drink... and Why Most Koreans Don't

Last Updated on March 30, 2026

Fill up a glass of water from the tap in Korea and start drinking it in front of your Korean host and watch their reaction. Despite the tap water in Seoul going through more rigorous quality testing than most developed cities in the world, the vast majority of Koreans won’t drink it. They’ll reach for bottled water, a filtered pitcher, or boiled water before they’ll drink straight from the tap.

So, what’s going on?

The short answer: yes, tap water in Korea is safe to drink. The longer answer involves old pipes, a government overhaul, a cultural preference that data hasn’t shifted yet, and some genuinely interesting statistics about what’s actually in Korean tap water versus the alternatives. Here’s everything you need to know before your trip.

The primary water source in Seoul is the Han River and there are six treatment plants that the water is filtered through. There are scientists who continually monitor the water quality for 170 variables as recommended by the World Health Organization (WHO) as well. The water infrastructure is very reliable and well maintained and the purification processes are kept up to date.

Learn more about tap water in Korea:

Quick Answer: Tap Water in Korea

Is tap water safe to drink in Seoul?	Yes. It meets WHO standards and is regularly tested.
Is tap water safe to drink in Jeju?	Yes, the same national standards apply.
Do Koreans drink tap water?	Most don’t. There is a cultural preference for bottled or filtered water.
What do locals drink instead?	Bottled water (Jeju Samdasoo is the most popular) or home filter systems.
Best option for travelers?	Tap water is fine. Bring a reusable bottle and refill at dispensers.

How to say ‘water’ in Korean

Water in Korean is 물 (mul).

To ask for water, you can say 물 주세요 (mul juseyo).

Why don’t people drink tap water in Korea?

In the past, people considered tap water unsafe due to old piping but the government has been replacing old pipes continually since 2017 to improve the water quality. In fact, replacing old water pipes in Seoul has been a top priority.

From 2017 until 2024, the government planned to conduct maintenance and replace 13,336 kilometers of water pipes across the country. Additionally, they planned to install a smart water pipe control system for the 161 cities and counties in Korea before the end of 2022 so that local governments could monitor their tap water quality in real time.

Though the government has continued to push tap water safety, most people don’t drink it. A survey done by the Environment Ministry in 2021 showed that just 36% drink water from the tap and even some of those still boiled it first. This is changing slowly but surely as the Korean government convinces people with the numbers and statistics on water safety though.

But it’s changing…

While this is the case, you’ll often find students in Korean schools drinking from water fountains and kids use public fountains in parks so perhaps for them, it’ll be much more normal to drink from taps.

The Environment Ministry is actively pushing policies that are in line with the drive for carbon neutrality which is why they’re pushing to make tap water resources better and better as data has shown that bottled water and water purifiers produce 700 times and over 1500 times the amount of carbon dioxide compared to tap water.

Is tap water in Korea healthy?

You might be surprised to hear that Korea’s tap water is considered healthier than purified water. A 2013 report by the National Institute of Environmental Research showed that the risk of bacterial growth was lowest in tap water whereas water that had gone through home purifiers or was left in opened bottles carried bacteria.

On top of that, tap water had as much mineral content as bottled spring water whereas purified water had almost zero mineral content.

Is water in hotels and guest houses safe to drink in Korea?

If you’re a tourist in Korea or staying in an older home, it’s recommended to turn on the tap for 30 seconds before use to flush out any water that was sitting in the pipes. Though the government has been replacing old pipes throughout the country, replacing pipes in homes and older apartments is at the discretion of the owners.

The government has offered financial assistance for home owners with homes built before 1994 and by 2017, 61% of some almost 350,000 targeted homes had upgraded their pipes.

Why do people drink bottled water in Korea?

In the same survey done by the Environment Ministry mentioned above, 49.5% of people said they use water purifiers to filter their tap water and 32.9% bought bottled water. Due to various things in the past with local water and pipe issues, it’s generally accepted that bottled water is the way to go.

Public campaigns are continually promoting drinking tap water, but by and large, the majority of people are still opting for bottled water and the bottled water industry in Korea is huge, selling water in bulk packs. There are more than 20 different brands of water and cost anywhere between W500 to W2000 per bottle.

What is the most popular bottled water in Korea?

There are around 60 bottled water manufacturers in Korea and more than 200 water brands. One thing I’ve learned in Korea is that if a lot of people are eating somewhere, you eat there too. If you like to follow that rule, then here are the top two bottled water brands in Korea.

Jeju Samdasoo (제주 삼다수): The most popular bottled water in Korea, it was created by the Jeju Island Development Corporation and Kwangdong Pharmaceutical Co., Ltd. It has been ranked the number one bottled water in Korea for 20 years and took that spot as soon as it was launched thanks to being the only volcanic bedrock water in South Korea.

Lotte Chilsung Isis 8.0 (롯데칠성 아이시스 8.0): Created and promoted with the idea that alkaline water is good for the body, the 8.0 refers to the pH concentration with weak alkali in the water.

Is Tap Water Safe to Drink in Jeju?

Yes. Jeju tap water is subject to the same national water quality standards as the rest of Korea and is safe to drink. Jeju’s water source is volcanic bedrock water filtered through the island’s unique geology, which is the same source used for Jeju Samdasoo, Korea’s most popular bottled water.

In fact, many people who live on Jeju drink tap water more readily than residents of Seoul because of the island’s natural filtration. The same advice applies — if staying in an older building, run the tap for 30 seconds first.

The Best Travel Water Bottles for Korea

Korea makes carrying a reusable bottle easy. Public buildings, tourist attractions, subway stations, and most parks have water dispensers where you can refill for free. The key considerations for Korea specifically are insulation (summers are brutally hot and humid), weight (you’ll be walking and using public transport all day), and size (you don’t need to carry 32 oz when refills are everywhere, a 20 oz bottle is usually enough).

Most people struggle to get enough water every day. Did you know you should get 15.5 cups of water per day if you’re a man and 11.5 cups of water per day if you’re a woman?

Brita Stainless Steel Premium Filtering Water Bottle

GRAYL GeoPress 24 oz Water Purifier Bottle

Water Purifier Bottles

This option is a bit much for Korea unless you’re planning to go camping and want to drink water outside. If you’re still not quite sure about the water in Korea, carry around a water purifier bottle which comes with a filter that you can replace.

Grayl Geopress Water Purifier: This will have your water crystal clear. The Grayl is designed to filter out protozoa, chemicals, particulates, heavy metals, bacteria, and viruses. It’s easy to clean and comfortable to carry.

Astrea One Filtered Water Bottle: Filters out heavy metals, chemicals and the things you don’t want to ingest, the water will be clear and delicious when you’re using this bottle.

Brita Premium Filtering Water Bottle: Brita is well known for their faucet and pitcher filters, did you know they make filtered water bottles too? Sturdy and trusted.

Stainless Steel Water Bottles

Lightweight, indestructible, and healthy, these are a great option if you’re traveling and want to have your water with you.

YETI Rambler: YETI is great if you’ll be on the go a lot, hiking, camping, and just generally on the move. They’re dishwasher safe, BPA-free, and will keep drinks cold for up to 12 hours.

Hydro Flask Wide Mouth: Slim enough to fit into a cup holder, this slim water bottle is great for road trips, days at the beach, hiking, and all of the adventures you’ll have in Korea. It’s BPA-free too.

Nomader BPA-Free Collapsible Sports Water Bottle

Collapsible Water Bottles

I got a collapsible cup for the first time a few years ago for camping and thought it was the coolest thing around. If you’re trying to save space, a collapsible water bottle is a good option. Though they’re made out of plastic, they are lightweight and easy to pack.

Nomander Collapsible Water Bottle: You won’t find a better collapsible water bottle It’s very durable, BPA-free and made from silicone.

Nefeeko Collapsible Water Bottle: Lightweight and leak proof, this water bottle is durable and flexible made from silicone and BPA-free.

Cheonggyecheon Stream, Seoul, Korea: Street Art & Hallie Bradley

What To Pack If You’re Traveling To Korea: The Only List You Need

For a full Korea packing list including what to bring and what to leave at home, check out the complete Korea packing guide.

Where to Refill Your Water Bottle in Korea

One of the best things about carrying a reusable bottle in Korea is how easy it is to refill. Public water dispensers are common in a way they aren’t in many countries:

Subway stations have water fountains often somewhere in the station lobby; look for the 음수대 (eumsudae) sign.

National and city parks including all eleven Han River parks have water dispensers throughout. Gyeongbokgung, Changdeokgung, and other major palace sites also have refill points near the main gates.

Public buildings including community centres, libraries, and government offices almost always have water dispensers in the lobby; free to use.

Convenience stores (CU, GS25, 7-Eleven) will fill your bottle from their water dispenser if you ask; not always offered proactively, but generally accommodated.

Tourist information centres across Seoul and in major destinations like Gyeongju, Busan, and Jeju all have water available.

Korea’s push toward carbon neutrality means the availability of public water dispensers has increased significantly in the past five years and will continue to expand. Carry a bottle and you’ll rarely need to buy one.

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Tap Water In Korea: Is It Safe to Drink… and Why Most Koreans Don’t