Tap water hardness in Gangwon-do

We have published hardness data for 17 cities in Gangwon-do. The median is 47 mg/L; the hardest water is in Donghae (149 mg/L), the softest in Sokcho (9 mg/L).

6 % 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 Gangwon-do, hardest first

All cities in South Korea →