Water Hardness North Carolina
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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