Water Hardness in Durham, North Carolina
The water hardness in Durham, NC is 48 ppm (2.8 grains per gallon), which is classified as Soft . Water in Durham is supplied by City of Durham Water Management and comes primarily from surface water sources such as rivers, lakes, and reservoirs. No water softening treatment is needed. Durham residents enjoy naturally soft water that is gentle on plumbing, appliances, and skin.
Water Quality Details for Durham, NC
What 48 PPM Means for Your Home in Durham
At 48 ppm, Durham's water is classified as soft. This is excellent news for homeowners. Soft water lathers easily with soap and shampoo, leaves no mineral spots on dishes or glassware, and causes no scale buildup in your plumbing or water heater. Your appliances will operate at peak efficiency and enjoy their full expected lifespan. Laundry washed in soft water comes out cleaner and softer, and you will use significantly less soap, shampoo, and detergent than households with hard water. There is no need to invest in any water softening or conditioning equipment.
Water Source and Treatment at City of Durham Water Management
Durham's water is supplied by City of Durham Water Management and sourced primarily from surface water bodies including rivers, lakes, and reservoirs. Surface water typically requires more treatment for biological contaminants (bacteria, algae, sediment) but tends to have lower mineral content than groundwater. The hardness level of 48 ppm in Durham reflects the mineral content picked up as water flows through local watershed geology before reaching the treatment plant. The water has a pH of 7.2, which is near neutral, and total dissolved solids of 72 ppm (low).
Estimated Cost of Hard Water in Durham
With soft water at 48 ppm, Durham residents enjoy minimal costs associated with water hardness. There is no need for a water softener, and your appliances, plumbing, and fixtures will operate efficiently without mineral-related issues. You can use the manufacturer-recommended amounts of soap, shampoo, and detergent without needing extra.
Other Cities in North Carolina
Compare Durham's water hardness with other cities in North Carolina. Water hardness can vary significantly within a state depending on local geology and water sources.
| City | Hardness (PPM) | GPG | Level | Source |
|---|---|---|---|---|
| Durham | 48 ppm | 2.8 | Soft | Surface |
| Wilmington | 90 ppm | 5.3 | Slightly Hard | Ground |
| Fayetteville | 55 ppm | 3.2 | Soft | Surface |
| Raleigh | 50 ppm | 2.9 | Soft | Surface |
| Charlotte | 44 ppm | 2.6 | Soft | Surface |
| Greensboro | 42 ppm | 2.5 | Soft | Surface |
| Winston-Salem | 38 ppm | 2.2 | Soft | Surface |
| Hickory | 35 ppm | 2 | Soft | Surface |
| Asheville | 22 ppm | 1.3 | Soft | Surface |
Test Your Water for Accurate Results
The hardness value shown for Durham (48 ppm) is based on the most recent available data from City of Durham Water Management. Your actual water hardness may vary depending on your neighborhood, the age of your plumbing, and seasonal changes in water supply. For the most accurate measurement, we recommend testing your tap water with a home test kit or requesting a current water quality report from City of Durham Water Management. Visit our hardness scale guide to understand what your test results mean, or explore all treatment solutions to find the right option for your home.