Tap water hardness in North Chungcheong
We have published hardness data for 9 cities in North Chungcheong. The median is 92 mg/L; the hardest water is in Goesan (133 mg/L), the softest in Yeongdong (39 mg/L).
11 % 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 North Chungcheong, hardest first
| mg/L | mg/L | ||
|---|---|---|---|
| Goesan | 133 | 133 | hard |
| Jincheon | 112 | 112 | moderately hard |
| Boeun | 109 | 109 | moderately hard |
| Danyang | 107 | 107 | moderately hard |
| Jecheon | 92 | 92 | moderately hard |
| Chungju | 84 | 84 | moderately hard |
| Cheongju | 67 | 67 | moderately hard |
| Okcheon | 52 | 52 | soft |
| Yeongdong | 39 | 39 | soft |