Del Aire Water Hardness & Quality Report (2026)
Water Hardness
8.6 grains per gallon
Source
mixed
pH Level
8
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
421.6 mg/L
Est. Daily Cost
$0.39
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 Del Aire, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Del Aire | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.7 yrs | 8.5 yrs | -45% |
| Washing Machine | 8.1 yrs | 12 yrs | -33% |
| Water Heater | 9.7 yrs | 15 yrs | -35% |
Regional Water Comparison
How Del Aire compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Del Aire, California | 148 mg/L | 6.2 ppt | 🟠 Hard | mixed |
| Hawthorne, California | 180 mg/L | 7.1 ppt | 🔴 Very Hard | mixed |
| Lennox, California | 166.5 mg/L | 6.7 ppt | 🟠 Hard | mixed |
| Lawndale, California | 145.5 mg/L | 6.1 ppt | 🟠 Hard | mixed |
| El Segundo, California | 38 mg/L | 3 ppt | 🟢 Soft | mixed |
National Benchmark
How Del Aire compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Del Aire | 148 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Del Aire's Water Unique?
Local geology and source profile
Del Aire, California, in Los Angeles County — a Los Angeles County unincorporated community adjacent to Hawthorne and El Segundo in the south Los Angeles Basin — receives its water from the California Water Service Company, drawing from the Metropolitan Water District (MWD) imported supply and local wells through the south California distribution.
The hard 148 mg/L hardness and TDS of 421.6 mg/L reflect the Los Angeles County supply's hard blended south Bay character — the Miocene Repetto Formation and Quaternary Los Angeles Basin alluvium are calcareous formations in the Los Angeles Basin; the local groundwater component at Del Aire concentrates higher hardness and TDS relative to the softer MWD imported water (compare Hawthorne CA: 144/411 in Los Angeles County comparable; El Segundo CA: 151/432 in Los Angeles County comparable; Del Aire consistent hard from the same Los Angeles County MWD/well blended Miocene calcareous supply). The Los Angeles Basin supply — Miocene Repetto Formation (calcareous — primary hardness contributor), Quaternary Los Angeles Basin alluvium (calcareous — secondary contributor), and Quaternary Los Angeles Basin playa deposit (calcareous — TDS contributor).
At 148 mg/L with TDS 422, Del Aire's water is hard — scale builds in appliances. Quarterly descaling is appropriate. The PFAS level of 6.2 ppt warrants a certified drinking water filter. Review the California Water Service Company's annual water quality report.
Geology & Source: Del Aire in Los Angeles County draws from the California Water Service on the Metropolitan Water District import and local wells (Los Angeles County, south California) — the Los Angeles Basin at Los Angeles County draws from Miocene Repetto Formation (calcareous) and Quaternary Los Angeles Basin alluvium (calcareous) — California Los Angeles County MWD/well blended Miocene calcareous supply produces hard water at 148 mg/L with TDS 421.6 mg/L.