Hardest Water in North Carolina
25 cities ranked by water hardness. Asheville tops the list at 90 PPM.
North Carolina's water hardness varies significantly by city and water source. The state average across our database is 41 PPM, which is relatively soft. Most homes do not need a water softener. 0% of cities we track in North Carolina have hardness above 120 PPM.
Marion has the softest water at just 10 PPM. No softener is needed.
| # | City | PPM | GPG | Level | Softener? |
|---|---|---|---|---|---|
| 1 | Asheville | 90 | 5.3 | Moderately Hard | Optional |
| 2 | Gastonia | 53 | 3.1 | Slightly Hard | No |
| 3 | Charlotte | 50 | 2.9 | Slightly Hard | No |
| 4 | Winston-Salem | 49 | 2.9 | Slightly Hard | No |
| 5 | Wilmington | 49 | 2.9 | Slightly Hard | No |
| 6 | Cary | 49 | 2.9 | Slightly Hard | No |
| 7 | Greensboro | 46 | 2.7 | Slightly Hard | No |
| 8 | High Point | 46 | 2.7 | Slightly Hard | No |
| 9 | Raleigh | 45 | 2.6 | Slightly Hard | No |
| 10 | Hickory | 45 | 2.6 | Slightly Hard | No |
| 11 | Indian Trail | 44 | 2.6 | Slightly Hard | No |
| 12 | Huntersville | 42 | 2.5 | Slightly Hard | No |
| 13 | Kannapolis | 41 | 2.4 | Slightly Hard | No |
| 14 | Apex | 40 | 2.3 | Slightly Hard | No |
| 15 | Mooresville | 40 | 2.3 | Slightly Hard | No |
| 16 | Wake Forest | 38 | 2.2 | Slightly Hard | No |
| 17 | Durham | 35 | 2 | Slightly Hard | No |
| 18 | Raleigh South | 35 | 2 | Slightly Hard | No |
| 19 | Fayetteville | 32 | 1.9 | Slightly Hard | No |
| 20 | Concord | 32 | 1.9 | Slightly Hard | No |
| 21 | Durham South | 30 | 1.8 | Slightly Hard | No |
| 22 | Jacksonville | 28 | 1.6 | Slightly Hard | No |
| 23 | Chapel Hill | 25 | 1.5 | Slightly Hard | No |
| 24 | Winston-Salem Downtown | 20 | 1.2 | Slightly Hard | No |
| 25 | Marion | 10 | 0.6 | Soft | No |
Frequently Asked Questions
What is the average water hardness in North Carolina?
Across 25 cities in our database, the average water hardness in North Carolina is 41 PPM (2.4 GPG). This ranges from 10 PPM in Marion to 90 PPM in Asheville.
Do I need a water softener in North Carolina?
It depends on your city. 0% of North Carolina cities in our database (0 of 25) have hardness above 120 PPM where a softener provides measurable benefit. Check your specific city above.
Which North Carolina city has the softest water?
Marion has the softest water in North Carolina at 10 PPM (0.6 GPG). No water softener is needed at this level.
What causes hard water in North Carolina?
Hard water in North Carolina is caused by dissolved calcium and magnesium from the local geology. Most of the state has favorable geology with granite, metamorphic, or volcanic rock that contributes minimal dissolved minerals.