Tap water hardness in North Dakota
We have published hardness data for 3 cities in North Dakota. The median is 7.8 gpg; the hardest water is in Minot (10.4 gpg), the softest in Bismarck (7.3 gpg).
100 % of these cities have hard or very hard water (over 120 mg/L).
USGS classes: soft 0–60, moderately hard 61–120, hard 121–180, very hard >180 mg/L.
Cities in North Dakota, hardest first
| gpg | mg/L | ||
|---|---|---|---|
| Minot | 10.4 | 178 | hard |
| Fargo | 7.8 | 134 | hard |
| Bismarck | 7.3 | 125 | hard |
On a private well? Well water hardness in North Dakota by county →