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Blacksburg Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

reservoir

pH Level

7.7

neutral = 7.0

Lead

0.003 mg/L

✓ Below action level

TDS

199.7 mg/L

Est. Daily Cost

$0.40

energy & soap waste

Source: See methodology section below · Updated 2026

hard~120–179 mg/LHard · est.

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 Blacksburg, your appliances are currently losing 20% efficiency due to mineral buildup.

ApplianceIn BlacksburgSoft Water CityEfficiency Loss
Kettle
6.8 yrs
8.5 yrs-20%
Washing Machine
9.6 yrs
12 yrs-20%
Water Heater
12 yrs
15 yrs-20%

Regional Water Comparison

How Blacksburg compares to its nearest neighbours

CityHardnessPFAS (ppt)RiskSource
Blacksburg, Virginia≈ 120–179 mg/L0 ppt🟠 Hardreservoir
Christiansburg, Virginia≈ 120–179 mg/L0 ppt🟠 Hardreservoir
Radford, Virginia82.5 mg/L0 ppt🟡 Moderately Hardreservoir
Salem, Virginia≈ 120–179 mg/L0 ppt🟠 Hardreservoir
Cave Spring, Virginia≈ 120–179 mg/L8.2 ppt🟠 Hardreservoir

National Benchmark

How Blacksburg compares to the USA average

BenchmarkHardnessAppliance Risk
Blacksburg≈ 120–179 mg/L🟠 Moderate
USA National Avg151 mg/L🟠 Moderate
Scarsdale Top Rated0.02 mg/L🟢 None

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What Makes Blacksburg's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 199.7 mg/LpH: 7.7

The Town of Blacksburg Water System serves approximately 44,000 residents in Montgomery County, Virginia, including the Virginia Tech campus, downtown areas, and surrounding neighborhoods such as Prices Fork Road. The utility draws from groundwater sources within local aquifers of the Appalachian Valley, distributing supply throughout the municipality and its service area. Treatment occurs at municipal facilities designed to meet federal Safe Drinking Water Act standards, though specific plant names are not detailed in available reports. No recent Consumer Confidence Report was directly retrieved from the official town site.

The watershed encompasses the upper New River basin, though Blacksburg relies primarily on groundwater recharged through the karst topography of Montgomery County. The geology consists of Paleozoic limestone and sedimentary formations in the Valley and Ridge physiographic province — carbonate rocks including dolomite and limestone layers that dissolve calcium and magnesium ions as groundwater percolates through them. This results in a moderately hard supply, with carbonate dissolution contributing elevated mineral content without extreme concentrations.

At moderately hard levels, scale buildup affects water heaters, faucets, and appliances, reducing efficiency and lifespan. Bathrooms show soap scum on showers and crusty deposits on aerators, while laundry and dishes require more detergent. Skin and hair may feel dry after showering. Maintenance includes regular fixture cleaning, installing scale inhibitors, and flushing water heaters. A whole-house water softener is often recommended for households experiencing these nuisance effects. The water receives a B- grade from some analyses due to eight contaminants exceeding health guidelines, though all meet federal standards; treatment involves standard disinfection and filtration for groundwater.

Geology & Source: Montgomery County Appalachian Valley; Paleozoic limestone and dolomite in Valley and Ridge province — karst landscape; carbonate rock dissolution imparts elevated calcium and magnesium producing moderately hard supply

Other Virginia Water Reports

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Frequently Asked Questions

Is Blacksburg's water safe to drink?
Yes. Blacksburg's water meets all federal safety standards. The hardness is ≈ 120–179 mg/L (Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.
Do I need a water softener in Blacksburg?
At ≈ 120–179 mg/L (Hard), Blacksburg's water will cause significant limescale on kettles, washing machines, and water heaters. A water softener or descaler is strongly recommended to extend appliance lifespan and reduce energy bills by up to 20%.
How does Blacksburg compare to the USA average?
The USA national average is 151 mg/L. Blacksburg (≈ 120–179 mg/L) is 1 mg/L below the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for Blacksburg is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.

Estimated

Water Hardness

Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.

Estimated

pH

Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.

Estimated

TDS — Total Dissolved Solids

Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.

Measured

PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances

EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.

Modelled

Lead

Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.

Calculated

Appliance Lifespan

Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.