Santa Paula Water Hardness & Quality Report (2026)
Water Hardness
5.7 grains per gallon
Source
mixed
pH Level
7.6
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
240.9 mg/L
Est. Daily Cost
$0.26
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 Santa Paula, your appliances are currently losing 13% efficiency due to mineral buildup.
| Appliance | In Santa Paula | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.4 yrs | 8.5 yrs | -25% |
| Washing Machine | 10 yrs | 12 yrs | -17% |
| Water Heater | 11.7 yrs | 15 yrs | -22% |
Regional Water Comparison
How Santa Paula compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Santa Paula, California | 97 mg/L | 4.7 ppt | 🟡 Moderately Hard | mixed |
| Camarillo, California | 51.5 mg/L | 3.4 ppt | 🟢 Soft | mixed |
| Fillmore, California | 90 mg/L | 4.5 ppt | 🟡 Moderately Hard | mixed |
| Moorpark, California | 63.5 mg/L | 3.7 ppt | 🟡 Moderately Hard | mixed |
| Oxnard, California | 87 mg/L | 4.4 ppt | 🟡 Moderately Hard | mixed |
National Benchmark
How Santa Paula compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Santa Paula | 97 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Santa Paula's Water Unique?
Local geology and source profile
Santa Paula, California, in Ventura County — a major Ventura County Santa Clara River Valley citrus city (Santa Paula is the 'Citrus Capital of the World' — a Ventura County city in the Santa Clara River Valley historically famous as the center of California's citrus industry; the Santa Paula area was the birthplace of Sunkist (the famous citrus cooperative was founded by citrus growers in the Ventura County Santa Clara Valley in 1893 — one of the most important agricultural cooperatives in California history), home of the California Oil Museum (Santa Paula was the birthplace of the California oil industry — the first commercially successful oil well in California was drilled in the Santa Paula area in 1876, and the city's downtown has a significant oil heritage museum)), a diverse Ventura County community with a significant Mexican-American farmworker, citrus industry, and working-class population, adjacent to Fillmore and Piru in the east Santa Clara Valley, and a city that experienced a catastrophic dam break (the 1928 St. Francis Dam failure killed over 400 people in the Santa Clara Valley) — draws its municipal water supply via the City of Santa Paula Water Division. Water hardness in Santa Paula measures 97 mg/L — classified as moderately hard.
Santa Paula's moderate hardness reflects the Ventura County Santa Clara Valley alluvial aquifer's calcareous-moderate character. The Santa Paula Creek alluvial aquifer draws from the Quaternary calcareous-moderate Santa Clara River alluvium (mixed carbonate alluvium). City of Santa Paula treatment produces the moderate 97 mg/L.
At 97 mg/L, Santa Paula residents encounter moderate scale accumulation. Monthly cleaning is recommended. City of Santa Paula Water Division consistently delivers water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.
Geology & Source: Groundwater from the Santa Paula Creek alluvial aquifer (Santa Clara River watershed) via the City of Santa Paula Water Division — the Ventura County Santa Clara Valley Santa Paula corridor (Quaternary calcareous-moderate Santa Clara River alluvium and Cretaceous calcareous-poor Transverse Ranges metasedimentary — the calcareous-moderate inland Ventura County citrus valley alluvial aquifer; effective treatment); moderately hard supply at 97 mg/L in Ventura County.