Water Hardness North Carolina
Here are the water hardness values for the cities in North Carolina.
| City | AVG Hardness PPM / mg/L | AVG Hardness Grains per Gallon |
|---|---|---|
| Apex | 27.5 | 1.7 |
| Asheville | 5 | 0.3 |
| Burlington | 30.8 | 1.9 |
| Cary | 27.5 | 1.7 |
| Charlotte | 24 | 1.5 |
| Durham | 22 | 1.3 |
| Fayetteville | 34.6 | 2.1 |
| Gastonia | 14 | 0.9 |
| Greensboro | 56 | 3.3 |
| High Point | 32.3 | 1.9 |
| Huntersville | 24 | 1.5 |
| Raleigh | 23.8 | 1.4 |
| Rocky Mount | 45 | 2.7 |
| Wilmington | 25 | 1.5 |
| Winston-Salem | 18.6 | 1.1 |