Water hardness in Yangpyeong
52 mg/L soft
Tap water in Yangpyeong is soft: 52 mg/L (3 gpg · 2.9 °dH · 5.2 °fH).
Source: K-water / 경기도 양평군 via data.go.kr (2025) · data checked 2026-10-20
Range across supply zones: 43–99 mg/L.
The municipal treatment plants serving Yangpyeong had a 2025 median hardness of 52.0 mg/L CaCO₃, with plants ranging from 42.5 to 98.5 mg/L. Much of the Seoul metropolitan area is supplied from the Han River system; the raw-water source of this municipal utility is not confirmed here. Soft water leaves little limescale on taps and appliances; detergent doses can usually stay at the low end of the label. The spread between plants is wide, so check which plant serves your street.
Korean waterworks report hardness (경도) in mg/L CaCO₃; the drinking-water standard is 300 mg/L (1,000 mg/L for some sources).
Water data
| Total hardness | 52 mg/L |
|---|---|
| Utility | Yangpyeong-gun (경기도 양평군) |
How Yangpyeong compares
- Tap water in Yangpyeong is 8 % softer than the median of the 127 cities we track in South Korea (57 mg/L).
- By hardness it ranks 72 of 127 in South Korea (1 = hardest); 43 % of these cities have softer water.
- In Gyeonggi-do it is number 21 of 25 cities; the regional median is 68 mg/L.
- Nearest city with clearly softer water: Chuncheon, 48 km away (34 mg/L).
- Nearest city with clearly harder water: Gwangju, 23 km away (68 mg/L).
Ranking of the hardest and softest water in South Korea →
What it means at home
- Little or no limescale in kettles, water heaters or washing machines.
- Soap lathers easily; water does not dry skin or hair.
- Dishwasher: salt setting at minimum or off.
- No softener needed; a jug filter only changes taste.
How much salt will you use for softening?
No. Water this soft does not need softening.
Descale a coffee machine or kettle about every 6 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Yangpyeong
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 3 °dH |
| AEG / Electrolux | 1 |
| Beko | 1st |
| Hoover | S0 |
| LG | H0 |
From each brand's manual for the model family named in the source; your model may differ, so check its manual. All brands and how to change the setting →
FAQ
Is Yangpyeong water hard or soft?
It is soft: 52 mg/L as CaCO₃ (3 gpg, 2.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Yangpyeong safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Korean waterworks report hardness (경도) in mg/L CaCO₃; the drinking-water standard is 300 mg/L (1,000 mg/L for some sources).
How many grains per gallon is Yangpyeong water?
3 gpg, equal to 2.9 °dH, 5.2 °fH or 52 mg/L calcium carbonate.
What dishwasher salt setting should I use in Yangpyeong?
For 52 mg/L (2.9 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Yangpyeong?
No. With soft water a softener adds nothing.
Source
Source: K-water / 경기도 양평군 via data.go.kr (2025). Method: figure published by the water supplier. K-water / 경기도 양평군 via data.go.kr · Outdated figure? Tell us