Palmdale Water Hardness & Quality Report (2026)
Water Hardness
7.1 grains per gallon
Source
mixed
pH Level
7.8
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
320.4 mg/L
Est. Daily Cost
$0.32
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 Palmdale, your appliances are currently losing 16% efficiency due to mineral buildup.
| Appliance | In Palmdale | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.6 yrs | 8.5 yrs | -34% |
| Washing Machine | 9.1 yrs | 12 yrs | -24% |
| Water Heater | 10.8 yrs | 15 yrs | -28% |
Regional Water Comparison
How Palmdale compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Palmdale, California | 121 mg/L | 5.4 ppt | 🟠 Hard | mixed |
| Vincent, California | 116 mg/L | 5.2 ppt | 🟡 Moderately Hard | mixed |
| Lancaster, California | 103.5 mg/L | 4.9 ppt | 🟡 Moderately Hard | mixed |
| Rosamond, California | 140 mg/L | 5.9 ppt | 🟠 Hard | mixed |
| Lake Los Angeles, California | 80 mg/L | 4.2 ppt | 🟡 Moderately Hard | mixed |
National Benchmark
How Palmdale compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Palmdale | 121 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Palmdale's Water Unique?
Local geology and source profile
Palmdale, California receives its municipal water supply through the Palmdale Water District, sourcing from two primary origins: imported State Water Project (SWP) water delivered via the California Aqueduct through the Antelope Valley East Kern Water Agency (AVEK) distribution infrastructure, and locally pumped groundwater from the Antelope Valley Groundwater Basin beneath the Antelope Valley (western Mojave Desert) in Los Angeles County. The Antelope Valley Groundwater Basin is recharged by runoff from the San Gabriel Mountains to the south and the Tehachapi Mountains to the northwest. Water hardness in Palmdale measures 121 mg/L — classified as moderately hard.
Palmdale's moderate hardness reflects the character of its high desert basin groundwater and SWP imports. The Antelope Valley Groundwater Basin is filled with Quaternary and Tertiary alluvial fan and playa lake sediments — sand, silt, and clay derived from granite and gneiss of the San Gabriel and Tehachapi Mountains, with calcareous cement and calcium-bearing feldspar minerals that contribute dissolved calcium during long aquifer residence times. The semi-arid high Mojave climate — with annual precipitation below 8 inches and high evapotranspiration — concentrates dissolved minerals in shallow soil zones, adding to the hardness of recharged groundwater. SWP Sierra Nevada snowmelt dilutes the harder local groundwater.
With hardness at 121 mg/L, Palmdale residents notice moderate scale accumulation on bathroom fixtures, in kettles, and on glassware over time. Monthly cleaning of faucet aerators and showerheads with citric acid descaler keeps them performing well. Dishwashers produce cleaner results with rinse-aid, and water heaters benefit from an annual element inspection. Palmdale Water District consistently delivers water meeting all California SWRCB and EPA Safe Drinking Water Act requirements throughout the Antelope Valley service area.
Geology & Source: Mixed supply from Antelope Valley East Kern Water Agency (AVEK) State Water Project imports and the Palmdale Water District's Antelope Valley Groundwater Basin wells — Mojave Desert alluvial basin sediments derived from the San Gabriel and Tehachapi Mountains granitic terrain, with moderate evaporative concentration in the arid high desert, produces moderately hard supply at 121 mg/L.