Lewisville Water Hardness & Quality Report (2026)
Water Hardness
9.1 grains per gallon
Source
reservoir
pH Level
8.1
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
387.2 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 Lewisville, your appliances are currently losing 21% efficiency due to mineral buildup.
| Appliance | In Lewisville | 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 Lewisville compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Lewisville, North Carolina | 155 mg/L | 8.2 ppt | 🟠 Hard | reservoir |
| Clemmons, North Carolina | 74.5 mg/L | 4 ppt | 🟡 Moderately Hard | reservoir |
| Winston-Salem, North Carolina | 70 mg/L | 3.8 ppt | 🟡 Moderately Hard | reservoir |
| Lexington, North Carolina | 155 mg/L | 8.2 ppt | 🟠 Hard | reservoir |
| Kernersville, North Carolina | 88 mg/L | 4.7 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Lewisville compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Lewisville | 155 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Lewisville's Water Unique?
Local geology and source profile
Lewisville, North Carolina, in Forsyth County — a Forsyth County community adjacent to Winston-Salem and Clemmons in northwest North Carolina — receives its water from Winston-Salem/Forsyth County Utilities, drawing from Salem Lake or the Yadkin River (Forsyth County) through the Winston-Salem metro distribution.
The moderately hard 155 mg/L hardness and TDS of 387.2 mg/L reflect the northwest North Carolina Forsyth County Piedmont supply's moderate calcareous character — reflecting the Yadkin River watershed's calcareous input from the Triassic Dan River Basin sediments and Cambrian metasediment contacts typical of the Winston-Salem Piedmont, consistent with Hendersonville NC (152.5 mg/L). The Yadkin-Salem watershed at Forsyth County — Precambrian Carolina Terrane gneiss (insoluble — dilutant), Triassic Dan River Basin (slightly calcareous — primary hardness contributor), and Cambrian calcareous metasediments (calcareous — secondary contributor).
At 155 mg/L, Lewisville'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 8.2 ppt warrants a certified drinking water filter — the Forsyth County northwest North Carolina industrial corridor contribute to Lewisville's elevated readings.
Geology & Source: Lewisville in Forsyth County draws from the Winston-Salem/Forsyth County Utilities on Salem Lake or the Yadkin River (Forsyth County, northwest North Carolina) — the Yadkin-Salem watershed drains the Piedmont (Precambrian Forsyth Gneiss — insoluble) and Triassic Dan River Basin (slightly calcareous) — North Carolina Forsyth County Yadkin River Piedmont Precambrian-Triassic calcareous watershed produces moderately hard water at 155 mg/L with TDS 387.2 mg/L.