Tap water hardness in Delaware
We have published hardness data for 3 cities in Delaware. The median is 3.5 gpg; the hardest water is in Dover (5 gpg), the softest in Newark (3.2 gpg).
0 % 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 Delaware, hardest first
| gpg | mg/L | ||
|---|---|---|---|
| Dover | 5 | 86 | moderately hard |
| Wilmington | 3.5 | 61 | moderately hard |
| Newark | 3.2 | 55 | soft |
On a private well? Well water hardness in Delaware by county →