You arrive at your hotel in Seoul and feel thirsty. Can you just fill a glass from the bathroom tap and drink it?
If you ask the government, the answer is "YES".
If you ask a local Korean, the answer is usually "NO".
Why is there a difference? As a local insider at K-Life Lab, I will explain the truth about Korean tap water and how to stay hydrated safely.
The Official Fact: High Quality ("Arisu")
Technically, Seoul's tap water (branded as "Arisu") is world-class. It passes hundreds of strict quality tests and is perfectly safe to consume.
- Is it safe for brushing teeth? Yes, 100%.
- Is it safe for showering? Yes, 100%.
- Is it safe for boiling? Yes, absolutely.
The Local Reality: Why We Don't Drink It
Despite the high quality, you will rarely see a Korean drinking directly from the tap. Why?
- Reason 1: Old Pipes. While the water leaving the plant is clean, the pipes in older buildings might be rusty.
- Reason 2: Chlorine Smell. To kill bacteria, the water is treated with chlorine, which can leave a slight chemical taste.
So, what do locals do? We use Water Purifiers (Jeong-su-gi) or buy Bottled Water (Saeng-su).
Free Water in Restaurants
Here is the best news for tourists. In Korea, water is always FREE in restaurants.
- When you sit down, the server will bring a bottle of water and cups.
- Or, you might see a "Self-Service" sign near a water purifier.
- This water is filtered and chilled. Drink as much as you want!
Buying Bottled Water (Convenience Store)
If you need water for your hotel room, head to a convenience store (CU, GS25). It is extremely cheap.
- Popular Brand: "Samdasoo" (Jeju Volcanic Water) is the #1 brand.
- Price: Approx. 1,000 KRW ($0.75) for a 500ml bottle.
- Tip: Look for "2+1" deals. Buy 2, get 1 free.
K-Life Lab’s Recommendation
Do not be afraid to brush your teeth or wash your face with tap water. It is very clean.
However, for drinking, just do what the locals do: buy a cheap bottle of Samdasoo or use the purifier in your hotel lobby. It tastes much better!
