Tap water hardness in Gyeongsangbuk-do
We have published hardness data for 20 cities in Gyeongsangbuk-do. The median is 66 mg/L; the hardest water is in Uiseong (113 mg/L), the softest in Ulleung (11 mg/L).
0 % of these cities have hard or very hard water (over 120 mg/L).
Korean waterworks report hardness (경도) in mg/L CaCO₃; the drinking-water standard is 300 mg/L (1,000 mg/L for some sources).
Cities in Gyeongsangbuk-do, hardest first
| mg/L | mg/L | ||
|---|---|---|---|
| Uiseong | 113 | 113 | moderately hard |
| Yeongyang | 103 | 103 | moderately hard |
| Seongju | 103 | 103 | moderately hard |
| Pohang | 88 | 88 | moderately hard |
| Yecheon | 82 | 82 | moderately hard |
| Gyeongsan | 82 | 82 | moderately hard |
| Gumi | 78 | 78 | moderately hard |
| Andong | 76 | 76 | moderately hard |
| Sangju | 74 | 74 | moderately hard |
| Yeongdeok | 72 | 72 | moderately hard |
| Uljin | 61 | 61 | moderately hard |
| Yeongcheon | 60 | 60 | moderately hard |
| Goryeong | 60 | 60 | soft |
| Gimcheon | 57 | 57 | soft |
| Yeongju | 57 | 57 | soft |
| Gyeongju | 57 | 57 | soft |
| Cheongsong | 54 | 54 | soft |
| Mungyeong | 52 | 52 | soft |
| Bonghwa | 40 | 40 | soft |
| Ulleung | 11 | 11 | soft |