Prairie Ridge Water Hardness & Quality Report (2026)
Water Hardness
4.4 grains per gallon
Source
reservoir
pH Level
7.7
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
191.9 mg/L
Est. Daily Cost
$0.20
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 Prairie Ridge, your appliances are currently losing 10% efficiency due to mineral buildup.
| Appliance | In Prairie Ridge | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.1 yrs | 8.5 yrs | -16% |
| Washing Machine | 10.8 yrs | 12 yrs | -10% |
| Water Heater | 12.6 yrs | 15 yrs | -16% |
Regional Water Comparison
How Prairie Ridge compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Prairie Ridge, Washington | 74.5 mg/L | 3.2 ppt | 🟡 Moderately Hard | reservoir |
| Bonney Lake, Washington | 33.5 mg/L | 1.9 ppt | 🟢 Soft | reservoir |
| South Hill, Washington | 46 mg/L | 2.3 ppt | 🟢 Soft | reservoir |
| Puyallup, Washington | 80 mg/L | 3.4 ppt | 🟡 Moderately Hard | reservoir |
| Graham, Washington | 44 mg/L | 2.2 ppt | 🟢 Soft | reservoir |
National Benchmark
How Prairie Ridge compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Prairie Ridge | 74.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Prairie Ridge's Water Unique?
Local geology and source profile
Prairie Ridge, Washington, in Pierce County — a Pierce County unincorporated community adjacent to Bonney Lake and Sumner in west-central Washington — receives its water from Pierce County Utilities or a local water district, drawing from the White River watershed through the west-central Washington distribution.
The soft 74.5 mg/L hardness and TDS of 191.9 mg/L reflect the Pierce County White River supply's soft Cascade volcanic character — Mount Rainier's andesite and glacial rock flour are highly insoluble, with Holocene glacial outwash contributing modest calcareous content from carbonate-bearing glacial sediments (compare Bonney Lake WA: 72/185 in Pierce County comparable; Sumner WA: 76/197 in Pierce County comparable; Prairie Ridge consistent soft from the same Pierce County White River Cascade volcanic supply). The White River watershed — Quaternary Mount Rainier Cascade andesite (insoluble — primary dilutant), Holocene glacial outwash (slightly calcareous — primary hardness contributor), and Quaternary Puget Sound lowland till (slightly calcareous — minor TDS).
At 74.5 mg/L with TDS 192, Prairie Ridge's water is soft — minimal scale buildup. Annual descaling is appropriate. The PFAS level of 3.2 ppt is low — a clean result for Pierce County. Review Pierce County Utilities' annual water quality report.
Geology & Source: Prairie Ridge in Pierce County draws from the Pierce County Water on the White River reservoir (Pierce County, west-central Washington) — the White River watershed drains Quaternary Mount Rainier Cascade andesite (insoluble) and Holocene glacial outwash (slightly calcareous) — Washington Pierce County White River Cascade volcanic supply produces soft water at 74.5 mg/L with TDS 191.9 mg/L.