Drinking Water in Korea: What to Check in Your New Home

Illustration of a kitchen tap, a glass carafe and a drinking glass in a bright Korean apartment, with moving boxes nearby.
Illustration of a new home in Korea. Start by learning about the water at your address.

Water at Home in Korea · Part 1 of 5

You have moved into a new home in Korea. You unpack a cup, look at the kitchen tap and wonder: can I drink this water?

Start with your home. Find out where its water comes from, who looks after the pipes and whether there is a shared drinking-water dispenser. These answers will help you choose a daily routine.

Can you drink tap water in Korea?

In Seoul, the city describes Arisu, its public tap water, as water you can drink. K-water also explains how it treats and checks the tap water supplied through its facilities.

For your own kitchen tap, check the local supply and your building. Seoul Water’s home water-check service looks at indoor pipes and water tanks as well as the water itself.

You do not need to assume that a water product is essential just because you have moved to Korea. First, understand the water already available to you.

1. Find out where the water comes from

Ask your landlord, building manager or dorm office whether the building uses the public water supply. If it uses a private well, ask who checks that water and when it was last tested.

This matters because water from a different source may need different checks. A clear glass of water cannot tell you how the water was treated.

Also ask whether there are any current notices about repairs, water quality or a temporary loss of supply. Follow the instructions from your local water supplier.

2. Ask about the building

Seoul Water explains that indoor pipes and water tanks can be a reason for checking water at home. If your building has a tank, ask who manages it and when it was last cleaned.

You do not need to inspect the equipment yourself. Ask the person responsible for the building to explain its maintenance.

If there is a shared purifier or water dispenser, ask who cleans it and replaces its filters. A working button alone does not tell you when the machine was last serviced.

3. Know who can help

In Seoul: the city offers a free household water-check service called the Arisu Quality Verification System. It checks basic water-quality items. Further checks may follow if the first results do not meet the guidelines.

Use the official English service page, or contact Seoul Water at 02-120 to ask how to request a check. Have your address ready. Ask for language help if you need it.

Outside Seoul: contact your local water office. Ask which home-testing services are available, how to apply and whether there is a fee. Seoul’s service details do not automatically apply to other cities.

Three questions you can use

You can show these sentences to a landlord or building manager.

What you want to askKorean you can show
Does this building use the public water supply?이 건물은 상수도를 사용하나요?
Who looks after the water tank and pipes?물탱크와 배관은 누가 관리하나요?
Can I request a water-quality test?수질검사를 신청할 수 있나요?

What if the water tastes different?

Taste and safety are different questions. The US Centers for Disease Control and Prevention (CDC) says a change in taste, colour or smell may have several causes. Some changes can signal a problem.

If you notice a new or unusual change, contact your water supplier. If you suspect a safety problem, use another safe source of drinking water while you seek advice. Do not taste water to test whether it is safe.

If your water is suitable for drinking, you may prefer it cold. Seoul Water suggests chilling it in a glass or ceramic container. Chilling improves the drinking experience; it is not a safety treatment.

Keep the first few days simple

While you learn about your home, a small supply of bottled drinking water can be a practical temporary choice. If a shared dispenser is available, first confirm how it is maintained.

Then think about your routine. How much fridge space do you have? Will you move again soon? Are you comfortable cleaning a jug or arranging service visits?

You can compare products after these questions are clear. This helps you avoid paying for a setup that does not fit your room or your stay.

The KEYWORD_WORLD view

A new country brings many small decisions. Drinking water should become one less thing to worry about.

Our starting point is simple: learn what your home already offers, ask for help where needed, and then choose a routine you can manage. A few useful questions can make a bigger difference than buying something straight away.

NEXT POST · PART 2 Buying Bottled Water in Korea: Delivery, Storage and Recycling Read next post →

For other everyday tasks, explore First Steps in Korea: 10 Simple Guides for Daily Life.

Official sources

Information checked on September 10, 2026. Seoul service details apply to Seoul. The CDC source supports general water-safety guidance; its US service rules do not apply in Korea. For the water at your address, follow local water-office notices and advice.

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