Henderson Water Hardness & Quality Report (2026)
Water Hardness
9 grains per gallon
Source
reservoir
pH Level
8.1
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
383.1 mg/L
Est. Daily Cost
$0.41
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Henderson, your appliances are currently losing 21% efficiency due to mineral buildup.
| Appliance | In Henderson | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.5 yrs | 8.5 yrs | -47% |
| Washing Machine | 7.9 yrs | 12 yrs | -34% |
| Water Heater | 9.4 yrs | 15 yrs | -37% |
Regional Water Comparison
How Henderson compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Henderson, North Carolina | 154.5 mg/L | 8.1 ppt | 🟠 Hard | reservoir |
| Wake Forest, North Carolina | 82.5 mg/L | 4.4 ppt | 🟡 Moderately Hard | reservoir |
| Knightdale, North Carolina | 102.5 mg/L | 5.4 ppt | 🟡 Moderately Hard | reservoir |
| Durham, North Carolina | 109 mg/L | 5.7 ppt | 🟡 Moderately Hard | reservoir |
| West Raleigh, North Carolina | 126.5 mg/L | 6.6 ppt | 🟠 Hard | reservoir |
National Benchmark
How Henderson compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Henderson | 154.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Henderson's Water Unique?
Local geology and source profile
Henderson, North Carolina, in Vance County — the Vance County seat adjacent to Oxford and Kittrell on Kerr Lake (Roanoke River) in north-central North Carolina near the Virginia border — receives its municipal water from the Henderson Water Division, drawing from Kerr Lake (John H. Kerr Reservoir, Vance County) through the north-central North Carolina water treatment system.
The moderately hard 154.5 mg/L hardness and TDS of 383.1 mg/L are slightly harder than the downstream Roanoke Rapids (138 mg/L) — consistent with Kerr Lake's longer residence time concentrating the Roanoke River calcareous input at the impoundment. Kerr Lake (Roanoke River) at Vance County drains the Virginia-NC Blue Ridge foothills — Triassic Dan River Basin Formation (calcareous redbed — moderate hardness contributor), Precambrian Bassett Formation (slightly calcareous metamorphic), and Cambrian Chilhowee Group (slightly calcareous quartzite). The Triassic calcareous redbed input with reservoir concentration produces the moderately hard north-central NC supply.
At 154.5 mg/L, Henderson's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling is appropriate. The PFAS level of 8.1 ppt warrants a certified reverse osmosis drinking water filter — Fort Bragg/Fort Liberty (Cumberland County — AFFF, dominant central NC PFAS source), the Roanoke River PFAS corridor, and the north-central North Carolina industrial legacy contribute to Henderson's elevated readings.
Geology & Source: Henderson in Vance County draws from the Henderson Water Division on Kerr Lake (Vance County, north-central North Carolina) — Kerr Lake impounds the Roanoke River draining the Virginia Blue Ridge Foothills (Triassic Dan River Basin calcareous, Precambrian Bassett Formation slightly calcareous) — North Carolina Vance County Kerr Lake Roanoke watershed produces moderately hard water at 154.5 mg/L with TDS 383.1 mg/L.