Silver Firs Water Hardness & Quality Report (2026)
Water Hardness
2.1 grains per gallon
Source
reservoir
pH Level
7.3
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
67.2 mg/L
Est. Daily Cost
$0.09
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 Silver Firs, your appliances are currently losing 5% efficiency due to mineral buildup.
| Appliance | In Silver Firs | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.4 yrs | 8.5 yrs | -1% |
| Washing Machine | 12.3 yrs | 12 yrs | — |
| Water Heater | 14.2 yrs | 15 yrs | -5% |
Regional Water Comparison
How Silver Firs compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Silver Firs, Washington | 35.5 mg/L | 2 ppt | 🟢 Soft | reservoir |
| Eastmont, Washington | 36.5 mg/L | 2 ppt | 🟢 Soft | reservoir |
| Mill Creek East, Washington | 36.5 mg/L | 2 ppt | 🟢 Soft | reservoir |
| Mill Creek, Washington | 39 mg/L | 2.1 ppt | 🟢 Soft | reservoir |
| North Creek, Washington | 79 mg/L | 3.3 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Silver Firs compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Silver Firs | 35.5 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Silver Firs's Water Unique?
Local geology and source profile
Silver Firs, Washington, in Snohomish County — an unincorporated Snohomish County master-planned community in the Mill Creek corridor east of Everett, a suburban Snohomish County residential development in the Boeing-Everett employment corridor — receives its municipal water from the Snohomish County PUD or the Alderwood Water and Wastewater District, which draws from Spada Lake (Culmback Dam) on the Sultan River through the Everett regional water supply system.
The very soft 35.5 mg/L hardness and low TDS of 67.2 mg/L are consistent with the North Cascade crystalline supply character throughout the Everett-Alderwood distribution network — approaching the ultra-soft West Lake Stevens (17.5 mg/L) supply level, reflecting the same pristine Sultan River-Spada Lake watershed. Spada Lake drains the North Cascade Range terrain underlain by Precambrian-Paleozoic Skagit Gneiss Complex (high-grade metamorphic rocks — essentially carbonate-free), Jurassic-Cretaceous metavolcanic belts, and the North Cascade crystalline core granites. These ancient crystalline rocks produce very soft, low-mineral water characteristic of the Pacific Northwest's pristine mountain watersheds.
At 35.5 mg/L, Silver Firs' water is very soft — excellent for household use. Scale essentially never forms, soap lathers abundantly, and appliances maintain maximum efficiency. Annual descaling is more than sufficient. The PFAS level of 2.0 ppt is excellent — among the lowest in this dataset and in the greater Seattle-Everett area, reflecting the Silver Firs residential community's limited direct PFAS sources and the pristine North Cascade Sultan River watershed's essentially uncontaminated mountain supply.
Geology & Source: Silver Firs in Snohomish County draws from Snohomish County PUD or Alderwood Water on the Sultan River (Spada Lake) supply via Everett Water — the Sultan River drains the North Cascade Range (Skagit Gneiss Complex and Jurassic metavolcanic crystalline terrain) — North Cascade Precambrian crystalline watershed drainage produces very soft water at 35.5 mg/L with low TDS 67 mg/L in this Snohomish County Washington community.