Healdsburg Water Hardness & Quality Report (2026)
Water Hardness
10.9 grains per gallon
Source
mixed
pH Level
8.3
neutral = 7.0
Lead
0.009 mg/L
✓ Below action level
TDS
590.8 mg/L
Est. Daily Cost
$0.50
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 Healdsburg, your appliances are currently losing 25% efficiency due to mineral buildup.
| Appliance | In Healdsburg | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.4 yrs | 8.5 yrs | -60% |
| Washing Machine | 6.7 yrs | 12 yrs | -44% |
| Water Heater | 8.1 yrs | 15 yrs | -46% |
Regional Water Comparison
How Healdsburg compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Healdsburg, California | 186.5 mg/L | 7.5 ppt | 🔴 Very Hard | mixed |
| Windsor, California | 174 mg/L | 7.1 ppt | 🟠 Hard | mixed |
| Santa Rosa, California | 95.5 mg/L | 4.8 ppt | 🟡 Moderately Hard | mixed |
| Rohnert Park, California | 123.5 mg/L | 5.6 ppt | 🟠 Hard | mixed |
| Clearlake, California | 184 mg/L | 7.4 ppt | 🔴 Very Hard | mixed |
National Benchmark
How Healdsburg compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Healdsburg | 186.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Healdsburg's Water Unique?
Local geology and source profile
Healdsburg, California, in Sonoma County — a Sonoma County city adjacent to Windsor and Cloverdale on the Russian River in the Alexander Valley wine country of north California — receives its water from the City of Healdsburg Water Department, drawing from the Russian River through the north California distribution.
The hard 186.5 mg/L hardness and elevated TDS of 590.8 mg/L reflect the Sonoma County Russian River supply's hard character with significant dissolved solids — the Franciscan Complex is insoluble, but the Tertiary Sonoma Volcanics contribute calcareous minerals, and the Russian River's agricultural valley setting adds sulfates and agricultural return-flow minerals that significantly elevate TDS (compare Windsor CA: 182/580 in Sonoma County comparable; Cloverdale CA: 190/600 in Sonoma County comparable; Healdsburg consistent hard from the same Sonoma County Russian River Franciscan-Tertiary supply). The Russian River — Franciscan Complex (insoluble — dilutant), Tertiary Sonoma Volcanics (slightly calcareous — primary hardness contributor), and Quaternary Russian River alluvium (calcareous — TDS contributor).
At 186.5 mg/L with TDS 591, Healdsburg's water is hard with notably elevated TDS — scale builds in appliances over months, and the high dissolved solids are noticeable in taste. Quarterly descaling is appropriate. The PFAS level of 7.5 ppt warrants a certified drinking water filter. Review the City of Healdsburg's annual water quality report for the latest data.
Geology & Source: Healdsburg in Sonoma County draws from the City of Healdsburg Water on the Russian River (Sonoma County, north California) — the Russian River at Sonoma County drains Franciscan Complex (insoluble) and Tertiary Sonoma Volcanics (slightly calcareous) — California Sonoma County Russian River Franciscan-Tertiary calcareous supply produces hard water at 186.5 mg/L with TDS 590.8 mg/L.