Lompoc Water Hardness & Quality Report (2026)
Water Hardness
6.9 grains per gallon
Source
mixed
pH Level
7.8
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
310.7 mg/L
Est. Daily Cost
$0.31
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 Lompoc, your appliances are currently losing 16% efficiency due to mineral buildup.
| Appliance | In Lompoc | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.7 yrs | 8.5 yrs | -33% |
| Washing Machine | 9.3 yrs | 12 yrs | -22% |
| Water Heater | 10.9 yrs | 15 yrs | -27% |
Regional Water Comparison
How Lompoc compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Lompoc, California | 117.5 mg/L | 5.4 ppt | 🟡 Moderately Hard | mixed |
| Orcutt, California | 48.5 mg/L | 3.4 ppt | 🟢 Soft | mixed |
| Santa Maria, California | 91.5 mg/L | 4.6 ppt | 🟡 Moderately Hard | mixed |
| Nipomo, California | 53 mg/L | 3.5 ppt | 🟢 Soft | mixed |
| Arroyo Grande, California | 173.5 mg/L | 7 ppt | 🟠 Hard | mixed |
National Benchmark
How Lompoc compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Lompoc | 117.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Lompoc's Water Unique?
Local geology and source profile
Lompoc, California, in Santa Barbara County in the Santa Ynez Valley — the 'Flower Seed Capital of the World' (Lompoc Valley's Vandenberg Air Force Base area produces a significant fraction of commercial flower seeds), home of Vandenberg Space Force Base (a major US Space Force and commercial rocket launch facility, including SpaceX Falcon 9 polar orbit launches), and a diverse Santa Barbara County agricultural community with significant Hispanic-American and Polynesian-American populations — draws its municipal water supply from the Santa Ynez River (Cachuma Reservoir) via the City of Lompoc Water Division. Water hardness in Lompoc measures 117.5 mg/L — classified as moderately hard.
Lompoc's moderate hardness reflects the Santa Ynez River watershed's calcareous Central Coast geology. The Santa Ynez River above Cachuma Reservoir drains the Santa Ynez Mountains — a complex terrain including: Cretaceous Jalama and Point Loma Formations (calcareous-moderate marine sandstone of the Santa Ynez Mountain western flank); Eocene Cozy Dell and Matilija Formations (calcareous flysch sandstone of the Transverse Ranges, moderately calcareous); and the Miocene Monterey Formation (calcareous-moderate diatomite and shale). The moderately calcareous Santa Ynez Mountain watershed produces the moderate 117.5 mg/L at Lompoc.
At 117.5 mg/L, Lompoc residents encounter moderate scale accumulation. Faucet aerators and showerheads develop deposits after several months — monthly cleaning with citric acid solution is practical maintenance. City of Lompoc Water Division consistently delivers water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.
Geology & Source: Surface water from the Santa Ynez River (Cachuma Reservoir and Bradbury Dam) via the City of Lompoc Water Division and the Santa Barbara County Water Agency — the Santa Barbara County Santa Ynez Valley (Cretaceous–Eocene Salinian Block calcareous-moderate terrain and Santa Ynez Mountain calcareous sandstone watershed); moderately hard supply at 117.5 mg/L in Santa Barbara County.