Waxhaw Water Hardness & Quality Report (2026)
Water Hardness
6.1 grains per gallon
Source
reservoir
pH Level
7.7
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
204.9 mg/L
Est. Daily Cost
$0.28
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 Waxhaw, your appliances are currently losing 14% efficiency due to mineral buildup.
| Appliance | In Waxhaw | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.2 yrs | 8.5 yrs | -27% |
| Washing Machine | 9.7 yrs | 12 yrs | -19% |
| Water Heater | 11.4 yrs | 15 yrs | -24% |
Regional Water Comparison
How Waxhaw compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Waxhaw, North Carolina | 104.5 mg/L | 5.6 ppt | 🟡 Moderately Hard | reservoir |
| Indian Trail, North Carolina | 133 mg/L | 7 ppt | 🟠 Hard | reservoir |
| Stallings, North Carolina | 126.5 mg/L | 6.7 ppt | 🟠 Hard | reservoir |
| Matthews, North Carolina | 154 mg/L | 8.1 ppt | 🟠 Hard | reservoir |
| Monroe, North Carolina | 112 mg/L | 6 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Waxhaw compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Waxhaw | 104.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Waxhaw's Water Unique?
Local geology and source profile
Waxhaw, North Carolina, in Union County — a Union County town adjacent to Monroe and Matthews in the south Charlotte metro — receives its water from Union County Public Works, drawing from Twelve Mile Creek reservoir (Union County) through the south Charlotte metro distribution.
The moderately hard 104.5 mg/L hardness and TDS of 204.9 mg/L reflect the south-central North Carolina Union County Piedmont supply's moderate calcareous character — consistent with other Charlotte metro Piedmont communities (Waxhaw similar to Monroe GA at 134 mg/L and Southern Pines NC at 107.5 mg/L) reflecting the Carolina Piedmont calcareous metasediment geology across the Catawba-Yadkin watershed zone. The Twelve Mile Creek watershed at Union County — Precambrian Union County granite (insoluble — dilutant), Cambrian calcareous metasediments (calcareous — primary hardness contributor), and Quaternary Piedmont alluvium (slightly calcareous — TDS contributor).
At 104.5 mg/L, Waxhaw'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 5.6 ppt warrants a certified drinking water filter — the Union County south Charlotte industrial corridor contribute to Waxhaw's readings.
Geology & Source: Waxhaw in Union County draws from the Union County Public Works on Twelve Mile Creek reservoir (Union County, south-central North Carolina Piedmont) — the Twelve Mile Creek watershed drains the Carolina Piedmont (Precambrian Waxhaw granite — insoluble) and Cambrian calcareous metasediments — North Carolina Union County Twelve Mile Creek Piedmont Precambrian-Cambrian calcareous reservoir produces moderately hard water at 104.5 mg/L with TDS 204.9 mg/L.