Lowes Island Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
reservoir
pH Level
7.6
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
185.7 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 Lowes Island, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Lowes Island | 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 Lowes Island compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Lowes Island, Virginia | ≈ 120–179 mg/L | 5.3 ppt | 🟠 Hard | reservoir |
| Sugarland Run, Virginia | ≈ 120–179 mg/L | 9.9 ppt | 🟠 Hard | reservoir |
| Dranesville, Virginia | ≈ 120–179 mg/L | 7.6 ppt | 🟠 Hard | reservoir |
| Countryside, Virginia | ≈ 120–179 mg/L | 8.8 ppt | 🟠 Hard | reservoir |
| Great Falls, Virginia | ≈ 120–179 mg/L | 8.8 ppt | 🟠 Hard | reservoir |
National Benchmark
How Lowes Island compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Lowes Island | ≈ 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 Lowes Island's Water Unique?
Local geology and source profile
Lowes Island, Virginia, receives its drinking water from Loudoun Water, which draws primarily from the Potomac River and Goose Creek. The water undergoes treatment at facilities like the Lowes Island Water Treatment Plant, operated by Loudoun Water. This supply is further augmented by Fairfax Water's network, which also utilizes the Potomac River and Occoquan Reservoir. Together, these sources form an interconnected system that serves eastern Loudoun County, including the Lowes Island community. The Virginia Department of Health oversees compliance with the Safe Drinking Water Act for this supply.
The Potomac River watershed, spanning 14,670 square miles across four states, flows from the Appalachian highlands toward the Coastal Plain. Near Lowes Island, the underlying geology incorporates Paleozoic metasediments and limestones, alongside Triassic basin sediments. Tributaries of Goose Creek interact with Bull Run Formation shales and dolomites. This geological mix leads to the leaching of alkaline earth metals, particularly calcium and magnesium, from carbonate rocks like limestone and dolomite, ultimately defining the water's moderately mineralized character. Surface water chemistry reflects seasonal limestone weathering and runoff from agricultural soils.
Homeowners in Lowes Island might notice scale buildup in appliances such as dishwashers, washing machines, and water heaters, which can reduce their efficiency over time. Coffee makers and kettles can also show visible deposits. While soap lathering is generally fair, it could be improved. Routine descaling with vinegar can help manage these issues, though a whole-house water softener is often recommended for households that do a lot of laundry or frequently brew tea. This can extend appliance life and enhance the performance of soaps and detergents. Loudoun Water confirms that its treated water meets EPA primary drinking water standards, with no violations reported. The pH typically hovers between 7.4 and 7.8 following lime softening treatment.
Geology & Source: Piedmont metamorphic terrain; Paleozoic limestone and Triassic sedimentary rocks contribute moderate hardness
Other Virginia Water Reports
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Frequently Asked Questions
Is Lowes Island's water safe to drink?
Do I need a water softener in Lowes Island?
How does Lowes Island compare to the USA average?
Data Sources & Methodology
Water quality data for Lowes Island 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.