Christiansburg Water Hardness & Quality Report (2026)
Water Hardness
5.4 grains per gallon
Source
reservoir
pH Level
7.5
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
154.8 mg/L
Est. Daily Cost
$0.25
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 Christiansburg, your appliances are currently losing 12% efficiency due to mineral buildup.
| Appliance | In Christiansburg | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.5 yrs | 8.5 yrs | -24% |
| Washing Machine | 10.2 yrs | 12 yrs | -15% |
| Water Heater | 11.9 yrs | 15 yrs | -21% |
Regional Water Comparison
How Christiansburg compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Christiansburg, Virginia | 92.5 mg/L | 4.8 ppt | 🟡 Moderately Hard | reservoir |
| Blacksburg, Virginia | 109 mg/L | 5.7 ppt | 🟡 Moderately Hard | reservoir |
| Radford, Virginia | 82.5 mg/L | 4.3 ppt | 🟡 Moderately Hard | reservoir |
| Salem, Virginia | 116 mg/L | 6 ppt | 🟡 Moderately Hard | reservoir |
| Cave Spring, Virginia | 156.5 mg/L | 8.2 ppt | 🟠 Hard | reservoir |
National Benchmark
How Christiansburg compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Christiansburg | 92.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Christiansburg's Water Unique?
Local geology and source profile
Christiansburg, Virginia, in Montgomery County — the Montgomery County seat in the New River Valley, adjacent to Blacksburg and Virginia Tech in the southwestern Virginia Blue Ridge foothills — receives its municipal water from the Christiansburg/Montgomery County Public Service Authority (PSA), which draws from reservoir impoundments on the New River watershed in the New River Valley. The Montgomery County PSA serves both Christiansburg and the greater New River Valley municipal corridor.
The moderately soft 92.5 mg/L hardness and TDS of 154.8 mg/L reflect the New River watershed's mixed Blue Ridge and Valley geology. The New River (one of North America's geologically ancient rivers, possibly among the oldest rivers on the continent) drains the Blue Ridge Province of southwestern Virginia — where Precambrian Grenville-age gneiss (the Pedlar and Old Rag metamorphic-plutonic complex) and related crystalline rocks produce characteristically soft water — and the Valley and Ridge Province (Ordovician Beekmantown Dolomite, Trenton Limestone, and related carbonate formations). The Blue Ridge crystalline terrain contribution softens the overall watershed supply, producing moderately soft water softer than many other Virginia Piedmont communities.
At 92.5 mg/L, Christiansburg's water is moderately soft — comfortable for all household uses. Scale forms slowly over many months in kettles and appliances, soap lathers well, and the dishwasher produces clean results. Semi-annual descaling of heating appliances is adequate. The PFAS level of 4.8 ppt warrants a certified drinking water filter — Radford Army Ammunition Plant (a major ordnance manufacturing facility on the New River in Radford, just upstream), the Virginia Tech research corridor's PFAS background, and the New River Valley's military-industrial history contribute to the Montgomery County water supply PFAS profile.
Geology & Source: Christiansburg in Montgomery County draws from the Christiansburg/Montgomery County PSA reservoir system on the New River watershed — the New River headwaters drain the Blue Ridge Province (Precambrian Grenville gneiss) and the Valley and Ridge (Ordovician limestone and shale) of western Virginia — Blue Ridge and Valley crystalline drainage produces moderately soft water at 92.5 mg/L with TDS 155 mg/L in this New River Valley community.