Fillmore Water Hardness & Quality Report (2026)
Water Hardness
5.3 grains per gallon
Source
mixed
pH Level
7.6
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
218.6 mg/L
Est. Daily Cost
$0.24
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 Fillmore, your appliances are currently losing 12% efficiency due to mineral buildup.
| Appliance | In Fillmore | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.6 yrs | 8.5 yrs | -22% |
| Washing Machine | 10.3 yrs | 12 yrs | -14% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Fillmore compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Fillmore, California | 90 mg/L | 4.5 ppt | 🟡 Moderately Hard | mixed |
| Moorpark, California | 63.5 mg/L | 3.7 ppt | 🟡 Moderately Hard | mixed |
| Santa Paula, California | 97 mg/L | 4.7 ppt | 🟡 Moderately Hard | mixed |
| Simi Valley, California | 109 mg/L | 5.1 ppt | 🟡 Moderately Hard | mixed |
| Camarillo, California | 51.5 mg/L | 3.4 ppt | 🟢 Soft | mixed |
National Benchmark
How Fillmore compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Fillmore | 90 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Fillmore's Water Unique?
Local geology and source profile
Fillmore, California, in Ventura County — a Ventura County city adjacent to Piru and Santa Paula on the Santa Clara River in the east Ventura County agricultural belt — receives its water from the Fillmore Water Division, drawing from the Santa Clara River (Ventura County) or local alluvial well sources through the east Ventura County water treatment system.
The moderately soft 90 mg/L hardness and TDS of 218.6 mg/L (elevated TDS relative to hardness — suggesting additional mineral loading from local agricultural return flows or evaporitic contact) reflect the east Ventura County Santa Clara River supply's moderate character. The Santa Clara River (Ventura County) drains the Transverse Ranges — Cretaceous Simi Valley Granodiorite (insoluble), Eocene Matilija Formation (insoluble sandstone), and the Piru Formation Miocene calcareous marine sediments (minor hardness contributor in the upper watershed). The predominantly insoluble Transverse Range geology produces the moderately soft east Ventura supply.
At 90 mg/L, Fillmore's water is moderately soft — light scale forms slowly in appliances, dishwashers remain efficient, and bathroom fixtures need occasional cleaning. Semi-annual descaling is appropriate. The PFAS level of 4.5 ppt warrants a certified drinking water filter — the Ventura County Santa Clara River agricultural corridor and the regional PFAS background from the Los Angeles metro industrial complex contribute to Fillmore's readings.
Geology & Source: Fillmore in Ventura County draws from the Fillmore Water Division on the Santa Clara River (Ventura County, south California) — the Santa Clara drains the Transverse Ranges (Cretaceous Simi Valley Granodiorite — insoluble, Eocene Matilija Sandstone — insoluble) — California Ventura County Santa Clara River Transverse Range watershed produces moderately soft water at 90 mg/L with TDS 218.6 mg/L in this Ventura County California city.