Campbell Water Hardness & Quality Report (2026)
Water Hardness
4.7 grains per gallon
Source
mixed
pH Level
7.5
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
192.1 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 Campbell, your appliances are currently losing 11% efficiency due to mineral buildup.
| Appliance | In Campbell | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.9 yrs | 8.5 yrs | -19% |
| Washing Machine | 10.6 yrs | 12 yrs | -12% |
| Water Heater | 12.4 yrs | 15 yrs | -17% |
Regional Water Comparison
How Campbell compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Campbell, California | 80.5 mg/L | 4.3 ppt | 🟡 Moderately Hard | mixed |
| Los Gatos, California | 162 mg/L | 6.7 ppt | 🟠 Hard | mixed |
| Santa Clara, California | 79 mg/L | 4.3 ppt | 🟡 Moderately Hard | mixed |
| San Jose, California | 189.5 mg/L | 7.5 ppt | 🔴 Very Hard | mixed |
| Saratoga, California | 109 mg/L | 5.2 ppt | 🟡 Moderately Hard | mixed |
National Benchmark
How Campbell compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Campbell | 80.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Campbell's Water Unique?
Local geology and source profile
Campbell, California, in Santa Clara County — a major west San Jose Silicon Valley community, birthplace of the annual Campbell Oktoberfest (a major Bay Area German heritage festival), a diverse Santa Clara County city with a historic downtown on Campbell Avenue, adjacent to the Ainsley House (a historic English Tudor Revival mansion) and Pruneyard Shopping Center, and a compact residential and tech community in the south Bay Area — draws its municipal water supply from Lexington Reservoir and Los Gatos Creek via the SCVWD and San Jose Water Company. Water hardness in Campbell measures 80.5 mg/L — classified as moderately soft.
Campbell's moderate softness reflects the west Santa Clara Valley's calcareous-poor geology and SCVWD treatment. Lexington Reservoir (on Los Gatos Creek — the Santa Cruz Mountains Cretaceous Franciscan Complex watershed, calcareous-poor coastal California melange terrain and calcareous-poor Santa Cruz Mountains terrain). The SCVWD manages the Lexington Reservoir for west Santa Clara Valley communities, and the San Jose Water Company blends this surface supply with groundwater from the Santa Clara Valley alluvial aquifer, applying effective treatment. The calcareous-poor Santa Cruz Mountains watershed and SCVWD treatment produce the moderate 80.5 mg/L.
With hardness at 80.5 mg/L, Campbell residents enjoy moderately soft water. Campbell Water Division consistently delivers water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.
Geology & Source: Mixed supply from the Santa Clara Valley Water District (SCVWD) Los Gatos Creek and Lexington Reservoir and San Jose Water Company groundwater via the City of Campbell Water Division — the Santa Clara County west San Jose–Campbell Silicon Valley (Cretaceous Franciscan Complex and Santa Cruz Mountains calcareous-poor terrain, effective SCVWD treatment); moderately soft supply at 80.5 mg/L in Santa Clara County.