Lake Los Angeles Water Hardness & Quality Report (2026)
Water Hardness
4.7 grains per gallon
Source
mixed
pH Level
7.5
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
187.9 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 Lake Los Angeles, your appliances are currently losing 11% efficiency due to mineral buildup.
| Appliance | In Lake Los Angeles | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7 yrs | 8.5 yrs | -18% |
| Washing Machine | 10.6 yrs | 12 yrs | -12% |
| Water Heater | 12.4 yrs | 15 yrs | -17% |
Regional Water Comparison
How Lake Los Angeles compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Lake Los Angeles, California | 80 mg/L | 4.2 ppt | 🟡 Moderately Hard | mixed |
| Palmdale, California | 121 mg/L | 5.4 ppt | 🟠 Hard | mixed |
| Vincent, California | 116 mg/L | 5.2 ppt | 🟡 Moderately Hard | mixed |
| Phelan, California | 63 mg/L | 3.7 ppt | 🟡 Moderately Hard | mixed |
| Lancaster, California | 103.5 mg/L | 4.9 ppt | 🟡 Moderately Hard | mixed |
National Benchmark
How Lake Los Angeles compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Lake Los Angeles | 80 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Lake Los Angeles's Water Unique?
Local geology and source profile
Lake Los Angeles, California, in Los Angeles County — a Los Angeles County unincorporated community adjacent to Palmdale and Pearblossom in the Antelope Valley — receives its water from the Palmdale Water District, drawing from the State Water Project or local groundwater (Los Angeles County) through the Antelope Valley distribution.
The soft 80 mg/L hardness and TDS of 187.9 mg/L are remarkably soft for the semi-arid Antelope Valley (compare Saddlebrooke AZ: 371.5/1066 in the Tucson desert far harder) — the State Water Project blending of Northern California Sierra snowmelt dilutes the Antelope Valley's Pleistocene Mojave Desert alluvium calcareous contact, producing moderate water. The Antelope Valley at Los Angeles County — Pleistocene Mojave Desert alluvium (calcareous — primary hardness contributor), Miocene Antelope Valley Formation (calcareous — secondary contributor), and SWP Sierra snowmelt blend (insoluble — primary dilutant).
At 80 mg/L, Lake Los Angeles' water is soft — scale forms slowly in appliances, dishwashers remain efficient, and no softening is needed. Annual descaling is appropriate. The PFAS level of 4.2 ppt warrants a certified drinking water filter — the Los Angeles County Antelope Valley military (Edwards AFB) and industrial corridor contribute to Lake Los Angeles' elevated readings.
Geology & Source: Lake Los Angeles in Los Angeles County draws from the Palmdale Water District on the State Water Project or local groundwater (Los Angeles County, Antelope Valley, California) — the Antelope Valley basin at Los Angeles County is developed in Pleistocene Mojave Desert alluvium (calcareous) and Miocene Antelope Valley Formation (calcareous) — California Los Angeles County Antelope Valley Pleistocene calcareous supply produces soft water at 80 mg/L with TDS 187.9 mg/L.