Water Hardness in North Carolina Cities

Water Hardness in North Carolina Cities

Water hardness in North Carolina, characterized by the amount of dissolved minerals such as calcium and magnesium, can significantly differ among various cities across the state due to its varied geological landscapes. Situated on the East Coast of the U.S., North Carolina’s water hardness levels reflect the geological diversity within the state.

Across North Carolina, water hardness can range from moderately soft to very hard, depending on the geological makeup of the area and the source of the water supply. For example, coastal areas tend to have softer water due to the influence of river basins and estuaries, while regions in the Piedmont and mountainous areas may experience harder water owing to the mineral composition of their local water sources.

The variation in water hardness throughout North Carolina influences not only the taste and aesthetics of the water but also the efficiency of soaps and detergents, plumbing maintenance, and the lifespan of appliances that utilize water. Given the state’s considerable geological diversity, water hardness is not uniform, highlighting the need for localized water treatment solutions and ongoing monitoring of water quality.

In the provided data, the water hardness levels show substantial variations across different cities in North Carolina. Among the cities for which data is reported, the highest water hardness level is recorded in Washington with at of 59.0 ppm, 3.4 gpg. Conversely, the city with the lowest recorded water hardness level is Asheville, reporting a hardness 5.2 ppm, 0.3 gpg.

City Hardness ppm (mg/L) Hardness gpg Information Source Notes
Charlotte 21.0 1.2 Link
Raleigh 28.2 1.6 Link
Greensboro 29.5 1.7 Link
Durham 24.0 1.4 Link
Winston-Salem 19.9 1.2 Link
Fayetteville n/a n/a Link
Cary n/a n/a Link
Wilmington 42.0 2.5 Link
High Point 48.0 2.8 Link
Concord n/a n/a Link
Asheville 5.2 0.3 Link
Greenville n/a n/a Link
Gastonia n/a n/a Link
Jacksonville n/a n/a Link
Apex n/a n/a Link
Huntersville 21.0 1.2 Link Serviced by Charlotte
Chapel Hill n/a n/a Link
Burlington 29.5 1.7 Link
Kannapolis n/a n/a Link
Rocky Mount 42.0 2.5 Link
Mooresville n/a n/a Link
Wake Forest 28.2 1.6 Link Serviced by Raleigh
Wilson n/a n/a Link
Hickory 15.9 0.9 Link
Holly Springs n/a n/a Link
Indian Trail 23.0 1.3 Link
Fuquay-Varina 28.2 1.6 Link
Salisbury 26.0 1.5 Link
Monroe n/a n/a Link
Goldsboro 32.0 1.9 Link
Garner n/a n/a Link
Cornelius 21.0 1.2 Link Serviced by Charlotte
New Bern n/a n/a Link Mentions they soften, but don’t quantify
Morrisville n/a n/a Link Serviced by Cary
Sanford 36.4 2.1 Link
Matthews 21.0 1.2 Link Serviced by Charlotte
Statesville n/a n/a Link
Clayton 36.5 2.1 Link
Thomasville n/a n/a Link
Asheboro 5.2 0.3 Link
Kernersville 19.9 1.2 Link Serviced by Winston Salem
Mint Hill 21.0 1.2 Link Serviced by Charlotte
Leland 28.0 1.6 Link
Shelby n/a n/a Link
Waxhaw 23.0 1.3 Link
Clemmons 19.9 1.2 Link Serviced by Winston Salem
Carrboro n/a n/a Link Served by same system as Chapel Hill
Knightdale 28.2 1.6 Link Covered by Raleigh
Kinston n/a n/a Link
Lexington n/a n/a Link
Harrisburg n/a n/a Link
Elizabeth City n/a n/a Link
Lumberton n/a n/a Link
Mebane n/a n/a Link
Lenoir n/a n/a Link
Boone n/a n/a Link
Pinehurst n/a n/a Link
Mount Holly 12.0 0.7 Link
Hope Mills n/a n/a Link Covered by Fayetteville
Morganton n/a n/a Link
Graham n/a n/a Link
Havelock n/a n/a Link Mentions it is treated for hardness but doesn’t quantify
Albemarle n/a n/a Link
Stallings 23.0 1.3 Link
Southern Pines 8.7 0.5 Link
Eden n/a n/a Link
Laurinburg n/a n/a Link
Belmont 17.8 1.0 Link
Davidson n/a n/a Link
Roanoke Rapids n/a n/a Link
Hendersonville n/a n/a Link
Henderson n/a n/a Link
Reidsville n/a n/a Link
Lewisville 19.9 1.2 Link Covered by Winston Salem per city website for utilities
Weddington 23.0 1.3 Link Union County
Newton n/a n/a Link
Archdale n/a n/a Link
Smithfield n/a n/a Link
Spring Lake n/a n/a Link
Wendell 28.2 1.6 Link Covered by Raleigh
Kings Mountain n/a n/a Link
Lincolnton n/a n/a Link
Elon 30.0 1.8 Link
Summerfield n/a n/a Link Looks like it’s mostly wellwater, city website has a whole log of water exploration initiatives.
Pineville 21.0 1.2 Link Covered by Charlotte
Winterville n/a n/a Link
Tarboro n/a n/a Link
Mount Airy n/a n/a Link
Waynesville n/a n/a Link
Rolesville 28.2 1.6 Link Covered by Raleigh
Hillsborough n/a n/a Link
Washington 59.0 3.4 Link
Morehead City n/a n/a Link
Aberdeen n/a n/a Link
Rockingham n/a n/a Link
Gibsonville n/a n/a Link
Wesley Chapel n/a n/a Link
Oak Island n/a n/a Link
Oxford n/a n/a Link
Butner n/a n/a Link
Top 100 North Carolina cities by population and their reported water hardness
ppm = Parts Per Million
mg/L = Milligrams Per Liter
gpg = Grains Per Gallon

Hard water can cause issues such as mineral buildup in plumbing and appliances, reduce the efficacy of soaps and detergents, and affect the taste of the water. A tried and true solution is the use of a water softener. A water softener, like the ones from DROP, could be a worthwhile investment.

These devices work by replacing the calcium and magnesium ions that cause hardness with sodium ions, resulting in softer water. With innovative features, easy installation, and efficient operation, DROP smart water softeners provide a solution to hard water issues, extending the lifespan of appliances, improving water taste, enhancing soap effectiveness, reducing scale build-up, and increasing the overall water efficiency in your home.

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