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.

#CityPPMGPGLevelSoftener?
1Asheville905.3Moderately HardOptional
2Gastonia533.1Slightly HardNo
3Charlotte502.9Slightly HardNo
4Winston-Salem492.9Slightly HardNo
5Wilmington492.9Slightly HardNo
6Cary492.9Slightly HardNo
7Greensboro462.7Slightly HardNo
8High Point462.7Slightly HardNo
9Raleigh452.6Slightly HardNo
10Hickory452.6Slightly HardNo
11Indian Trail442.6Slightly HardNo
12Huntersville422.5Slightly HardNo
13Kannapolis412.4Slightly HardNo
14Apex402.3Slightly HardNo
15Mooresville402.3Slightly HardNo
16Wake Forest382.2Slightly HardNo
17Durham352Slightly HardNo
18Raleigh South352Slightly HardNo
19Fayetteville321.9Slightly HardNo
20Concord321.9Slightly HardNo
21Durham South301.8Slightly HardNo
22Jacksonville281.6Slightly HardNo
23Chapel Hill251.5Slightly HardNo
24Winston-Salem Downtown201.2Slightly HardNo
25Marion100.6SoftNo

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.