Water hardness in Delaware
Typical Delaware tap water
87mg/L
5.1gpg
Moderately hard
Population-weighted middle value across 19 Delaware cities in the dataset
- People with hard or very hard water
- 0%
- Hardest
- Newark 94
- Softest
- Georgetown 11
We have hardness numbers for 17 Delaware cities. Each city page adds the water system's EPA violation record and a softener size for a typical household.
Dot size follows population. Tap a dot for the city page.
4Soft
13Moderately hard
0Hard
0Very hard
Hardest water in Delaware
Softest water in Delaware
All cities in Delaware
| City | mg/L | gpg | Class | Data | EPA health violations |
|---|---|---|---|---|---|
| Wilmington | 87 | 5.1 | Moderately hard | Utility report | 1 |
| Dover | 40 | 2.3 | Soft | Utility report | 0 |
| Newark | 94 | 5.5 | Moderately hard | Utility report | 0 |
| Middletown | 52 | 3.0 | Soft | Utility report | 0 |
| Bear | 94 | 5.5 | Moderately hard | Utility report | 0 |
| Glasgow | 90 | 5.3 | Moderately hard | Utility report | 0 |
| Brookside | 87 | 5.1 | Moderately hard | Utility report | 0 |
| Hockessin | 87 | 5.1 | Moderately hard | Utility report | 0 |
| Smyrna | 31 | 1.8 | Soft | Utility report | 0 |
| Pike Creek Valley | 87 | 5.1 | Moderately hard | Utility report | 0 |
| Georgetown | 11 | 0.6 | Soft | Utility report | 0 |
| North Star | 87 | 5.1 | Moderately hard | Utility report | 0 |
| Wilmington Manor | 87 | 5.1 | Moderately hard | Utility report | 0 |
| Pike Creek | 87 | 5.1 | Moderately hard | Utility report | 0 |
| Edgemoor | 87 | 5.1 | Moderately hard | Utility report | 0 |
| Elsmere | 87 | 5.1 | Moderately hard | Utility report | 0 |
| New Castle | 87 | 5.1 | Moderately hard | Utility report | 0 |
Questions
Is Delaware water hard?
The typical Delaware resident gets about 87 mg/L (5.1 gpg), which is moderately hard. About 0% of people in the cities we track have hard or very hard water.
Which city in Delaware has the hardest water?
Among 17 cities with pages here, Newark is highest at 94 mg/L.
Which city in Delaware has the softest water?
Georgetown, at 11 mg/L.
Other states
- Alabama73
- Alaska110
- Arizona180
- Arkansas39
- California121
- Colorado97
- Connecticut53
- District of Columbia117
- Florida120
- Georgia28
- Hawaii55
- Idaho118
- Illinois139
- Indiana178
- Iowa183
- Kansas138
- Kentucky134
- Louisiana102
- Maine16
- Maryland105
- Massachusetts38
- Michigan112
- Minnesota160
- Mississippi38
- Missouri121
- Montana116
- Nebraska149
- Nevada232
- New Hampshire20
- New Jersey80
- New Mexico137
- New York31
- North Carolina31
- North Dakota133
- Ohio113
- Oklahoma152
- Oregon24
- Pennsylvania127
- Rhode Island42
- South Carolina32
- South Dakota124
- Tennessee89
- Texas112
- Utah231
- Vermont62
- Virginia65
- Washington36
- West Virginia106
- Wisconsin170
- Wyoming191
Hardness data: TapWaterData US Water Hardness, CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.