Lake Ridge Water Hardness & Quality Report (2026)
Water Hardness
6.2 grains per gallon
Source
reservoir
pH Level
7.6
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
186.6 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 Lake Ridge, your appliances are currently losing 14% efficiency due to mineral buildup.
| Appliance | In Lake Ridge | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.1 yrs | 8.5 yrs | -28% |
| Washing Machine | 9.7 yrs | 12 yrs | -19% |
| Water Heater | 11.4 yrs | 15 yrs | -24% |
Regional Water Comparison
How Lake Ridge compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Lake Ridge, Virginia | 105.5 mg/L | 5.3 ppt | 🟡 Moderately Hard | reservoir |
| Dale City, Virginia | 91.5 mg/L | 4.6 ppt | 🟡 Moderately Hard | reservoir |
| Lorton, Virginia | 95 mg/L | 4.8 ppt | 🟡 Moderately Hard | reservoir |
| Montclair, Virginia | 113 mg/L | 5.8 ppt | 🟡 Moderately Hard | reservoir |
| Burke, Virginia | 89 mg/L | 4.5 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Lake Ridge compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Lake Ridge | 105.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Lake Ridge's Water Unique?
Local geology and source profile
Lake Ridge, Virginia, an unincorporated community in Prince William County — a major Prince William County planned residential community south of Occoquan, one of the largest communities in Prince William County, a significant Northern Virginia military and government contractor community (adjacent to Quantico Marine Corps Base), and a diverse Northern Virginia exurban community in the rapidly growing Prince William County growth corridor — draws its municipal water supply from the Occoquan Reservoir via the Prince William County Service Authority (PWCSA). Water hardness in Lake Ridge measures 105.5 mg/L — classified as moderately hard.
Lake Ridge's moderate hardness reflects the Occoquan watershed's Northern Virginia mixed geology. The Occoquan Reservoir (on Occoquan Creek — draining the Northern Virginia Piedmont and the Triassic Culpeper Basin): the Triassic Manassas Sandstone and Balls Bluff Siltstone (moderately calcareous Triassic red beds) and the Precambrian–Paleozoic calcareous-poor crystalline Piedmont terrain of northern Virginia. The PWCSA Occoquan water treatment plant applies effective treatment, producing the moderate 105.5 mg/L at Lake Ridge.
At 105.5 mg/L, Lake Ridge residents encounter moderate scale accumulation. Monthly cleaning with citric acid solution is recommended. PWCSA consistently delivers water meeting all Virginia DEQ and EPA Safe Drinking Water Act requirements.
Geology & Source: River supply from the Occoquan Reservoir (Occoquan Watershed Management Area) via the Prince William County Service Authority (PWCSA) — the Prince William County northern Virginia Piedmont Occoquan watershed (Triassic Culpeper Basin calcareous sediment and Precambrian Piedmont crystalline terrain); moderately hard supply at 105.5 mg/L in Prince William County.