Saint Helens Water Hardness & Quality Report (2026)
Water Hardness
4.5 grains per gallon
Source
reservoir
pH Level
7.6
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
179.5 mg/L
Est. Daily Cost
$0.21
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 Saint Helens, your appliances are currently losing 10% efficiency due to mineral buildup.
| Appliance | In Saint Helens | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7 yrs | 8.5 yrs | -18% |
| Washing Machine | 10.7 yrs | 12 yrs | -11% |
| Water Heater | 12.5 yrs | 15 yrs | -17% |
Regional Water Comparison
How Saint Helens compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Saint Helens, Oregon | 77.5 mg/L | 2.3 ppt | 🟡 Moderately Hard | reservoir |
| Salmon Creek, Washington | 58 mg/L | 2.7 ppt | 🟢 Soft | reservoir |
| Hazel Dell, Washington | 72.5 mg/L | 3.1 ppt | 🟡 Moderately Hard | reservoir |
| Vancouver, Washington | 61 mg/L | 2.8 ppt | 🟡 Moderately Hard | reservoir |
| Battle Ground, Washington | 68 mg/L | 3 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Saint Helens compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Saint Helens | 77.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Saint Helens's Water Unique?
Local geology and source profile
Saint Helens, Oregon, in Columbia County — the Columbia County seat adjacent to Scappoose and Rainier on the Columbia River in northwest Oregon — receives its water from the City of Saint Helens Water, drawing from Scappoose Bay or the Columbia River watershed (Columbia County) through the northwest Oregon distribution.
The soft 77.5 mg/L hardness and TDS of 179.5 mg/L reflect the northwest Oregon Columbia County Columbia River supply's soft character — the Miocene Columbia River Basalt and Oligocene volcanic formations contribute insoluble dilution typical of the northwest Oregon Columbia River communities (compare La Grande OR: 20 mg/L; Ferndale WA: 69 mg/L; Saint Helens slightly higher from the Columbia River valley calcareous alluvial contact). The Columbia River watershed at Columbia County — Miocene Columbia River Basalt Group (insoluble — primary dilutant), Oligocene Ohanapecosh Formation (insoluble — secondary dilutant), and Quaternary Columbia River alluvium (slightly calcareous — TDS contributor).
At 77.5 mg/L, Saint Helens' water is soft — scale forms very slowly in appliances, dishwashers remain efficient, and no softening is needed. Annual descaling is appropriate. The PFAS level of 2.3 ppt is very low — warrants routine monitoring but no urgent filtration.
Geology & Source: Saint Helens in Columbia County draws from the City of Saint Helens Water on Scappoose Bay or Columbia River watershed (Columbia County, northwest Oregon) — the Columbia River at Columbia County drains the Cascades (Miocene Columbia River Basalt Group — insoluble) and Oligocene Ohanapecosh Formation (insoluble) — Oregon Columbia County Columbia River Miocene-Oligocene insoluble volcanic supply produces soft water at 77.5 mg/L with TDS 179.5 mg/L.