Tap water hardness in Scotland

We have published hardness data for 24 cities in Scotland. The median is 31 mg/L; the hardest water is in Innerleithen (108 mg/L), the softest in Tarbert (8 mg/L).

0 % of these cities have hard or very hard water (over 120 mg/L).

UK suppliers report mg/L CaCO₃ and often Clark degrees (1 °Clark = 14.25 mg/L).

Cities in Scotland, hardest first

All cities in the United Kingdom →