Salem Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
reservoir
pH Level
8.1
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
220.2 mg/L
Est. Daily Cost
$0.40
energy & soap waste
Source: See methodology section below · 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 Salem, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Salem | Soft Water City | Efficiency 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 Salem compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Salem, Virginia | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | reservoir |
| Cave Spring, Virginia | ≈ 120–179 mg/L | 8.2 ppt | 🟠 Hard | reservoir |
| Roanoke, Virginia | ≈ 120–179 mg/L | 55.5 ppt | 🟠 Hard | reservoir |
| Hollins, Virginia | ≈ 120–179 mg/L | 8.8 ppt | 🟠 Hard | reservoir |
| Blacksburg, Virginia | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | reservoir |
National Benchmark
How Salem compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Salem | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Salem's Water Unique?
Local geology and source profile
The City of Salem Water Department serves the City of Salem, Virginia, and surrounding areas in Salem City County, with a population of approximately 25,000. Primary water sources are surface water reservoirs, including the 4.3 billion-gallon North Fork Reservoir and Lake Springfield. Water is treated at the 8 MGD O. S. DeHart Water Treatment Plant using conventional filtration, pre-oxidation with chlorine, and softening processes. Contact: 540-375-3029, 1300 Tidewater Street, P.O. Box 869, Salem, VA 24153.
The supply originates in the Roanoke River watershed, specifically the North Fork Roanoke sub-basin in the Blue Ridge physiographic province. Underlying formations include Precambrian to Paleozoic granitic gneiss, schist, and quartzite, with minor dolomitic marbles contributing to mineralization. No major aquifer is involved as this is surface water; geology imparts a hard character through natural leaching of divalent cations from weathered bedrock and soils during precipitation and streamflow.
Hard water in Salem leads to noticeable scale buildup in pipes, water heaters, dishwashers, and coffee makers, reducing efficiency and lifespan. Soap scum and spotting on dishes and fixtures are common, requiring more detergent. Maintenance tips include regular vinegar descaling of appliances, installing sediment filters, and flushing water heaters biannually. A water softener is recommended to prevent mineral accumulation and extend equipment life. The utility reports compliance with EPA standards in recent Consumer Confidence Reports, with treatment including softening, chlorination, and filtration; pH is typically 7.0–8.0 post-treatment, and no PFAS or lead/copper violations are noted in current data.
Geology & Source: Roanoke River watershed, Blue Ridge Mountains province; Paleozoic metamorphic and igneous rocks — gneisses, schists, granites (Ordovician–Devonian) — calcium and magnesium leaching from weathered bedrock imparts hard character
Other Virginia Water Reports
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Frequently Asked Questions
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How does Salem compare to the USA average?
Data Sources & Methodology
Water quality data for Salem is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
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.
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.
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.
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.
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.
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.