Livermore Water Hardness & Quality Report (2026)
Water Hardness
5.5 grains per gallon
Source
mixed
pH Level
7.6
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
232.1 mg/L
Est. Daily Cost
$0.25
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 Livermore, your appliances are currently losing 12% efficiency due to mineral buildup.
| Appliance | In Livermore | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.5 yrs | 8.5 yrs | -24% |
| Washing Machine | 10.1 yrs | 12 yrs | -16% |
| Water Heater | 11.9 yrs | 15 yrs | -21% |
Regional Water Comparison
How Livermore compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Livermore, California | 93.5 mg/L | 4.7 ppt | 🟡 Moderately Hard | mixed |
| Pleasanton, California | 148 mg/L | 6.3 ppt | 🟠 Hard | mixed |
| Dublin, California | 89.5 mg/L | 4.6 ppt | 🟡 Moderately Hard | mixed |
| San Ramon, California | 52 mg/L | 3.5 ppt | 🟢 Soft | mixed |
| Fremont, California | 180 mg/L | 7.3 ppt | 🔴 Very Hard | mixed |
National Benchmark
How Livermore compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Livermore | 93.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Livermore's Water Unique?
Local geology and source profile
Livermore, California, in the Livermore Valley of Alameda County — home of Lawrence Livermore National Laboratory — draws its municipal water supply through the Zone 7 Water Agency (Alameda County Flood Control and Water Conservation District Zone 7), sourcing from: State Water Project (SWP) delivery from the South Bay Aqueduct (Delta–Sacramento–Feather River origin); local Livermore Valley Groundwater Basin wells recharging from arroyo spreading; and East Bay Municipal Utility District (EBMUD) Mokelumne River treated water via Zone 7 purchase agreements. Zone 7 distributes to local water retailers in the Livermore–Pleasanton area. Water hardness in Livermore measures 93.5 mg/L — classified as moderately soft.
Livermore's moderately soft supply reflects the Zone 7 blend of SWP and local groundwater. The State Water Project component (Sacramento–Feather River origin) is inherently soft. The local Livermore Valley Groundwater Basin is recharged by Arroyo Mocho and Arroyo Las Positas drainage from the Diablo Range — underlain by the Franciscan Complex (siliceous chert, greywacke sandstone, glaucophane schist, and serpentinite), which is essentially calcium-free. This siliceous Franciscan Complex source produces soft alluvial recharge in the Livermore Valley. The blend of SWP and Franciscan Complex alluvial groundwater keeps Livermore's supply in the moderately soft range.
With hardness at 93.5 mg/L, Livermore residents experience light to moderate scale accumulation. Faucet aerators and showerheads develop deposits slowly — bi-monthly cleaning with citric acid solution is sufficient. Dishwashers produce clean glassware. Zone 7 Water Agency and local distributors consistently deliver water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.
Geology & Source: Mixed supply from the Zone 7 Water Agency (Alameda County) blend of State Water Project (Delta–Sacramento Valley), Zone 7 groundwater basin, and EBMUD Mokelumne River water via the Livermore-Amador Valley Water Management Agency — the Livermore Valley alluvial aquifer recharged by Arroyo Mocho and Arroyo Las Positas from the Diablo Range Franciscan Complex silica schist; moderately soft supply at 93.5 mg/L in the Livermore Valley.