El Segundo Water Hardness & Quality Report (2026)
Water Hardness
2.2 grains per gallon
Source
mixed
pH Level
7.2
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
77.8 mg/L
Est. Daily Cost
$0.10
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 El Segundo, your appliances are currently losing 5% efficiency due to mineral buildup.
| Appliance | In El Segundo | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.3 yrs | 8.5 yrs | -2% |
| Washing Machine | 12.2 yrs | 12 yrs | — |
| Water Heater | 14.1 yrs | 15 yrs | -6% |
Regional Water Comparison
How El Segundo compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ El Segundo, California | 38 mg/L | 3 ppt | 🟢 Soft | mixed |
| Manhattan Beach, California | 102 mg/L | 4.8 ppt | 🟡 Moderately Hard | mixed |
| Hermosa Beach, California | 60 mg/L | 3.6 ppt | 🟡 Moderately Hard | mixed |
| Hawthorne, California | 180 mg/L | 7.1 ppt | 🔴 Very Hard | mixed |
| Lennox, California | 166.5 mg/L | 6.7 ppt | 🟠 Hard | mixed |
National Benchmark
How El Segundo compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ El Segundo | 38 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes El Segundo's Water Unique?
Local geology and source profile
El Segundo, California, in Los Angeles County — a small Los Angeles County city adjacent to Manhattan Beach and Hawthorne on the Pacific coast directly adjacent to Los Angeles International Airport (LAX) — receives its municipal water from California Water Service or the El Segundo Water Division, drawing from the Metropolitan Water District of Southern California (MWD) blend — primarily State Water Project (SWP) Sierra Nevada snowmelt and treated Colorado River supply.
The very soft 38 mg/L hardness and TDS of 77.8 mg/L are among the softest in the Los Angeles area — reflecting El Segundo's coastal location where California Water Service delivers a higher proportion of the soft SWP Sierra Nevada snowmelt through the Hawthorne-El Segundo coastal service zone. The SWP source is inherently very soft (insoluble Sierra Nevada granodiorite), blended with a smaller proportion of the harder (but softened-for-distribution) Colorado River supply.
At 38 mg/L, El Segundo's water is very soft — essentially no scale forms, soap lathers abundantly, and appliances maintain excellent efficiency. Annual maintenance is sufficient. The PFAS level of 3.0 ppt warrants a certified drinking water filter — LAX (AFFF — directly adjacent to El Segundo), the El Segundo Chevron refinery complex (a major industrial PFAS source in the coastal LA corridor), and the Los Angeles County coastal PFAS background contribute to El Segundo's readings.
Geology & Source: El Segundo in Los Angeles County draws from California Water Service on the MWD (Metropolitan Water District) blend (Los Angeles coastal, California) — the MWD delivers State Water Project Sierra Nevada snowmelt (insoluble) and treated Colorado River water — California Los Angeles County MWD blended supply produces very soft water at 38 mg/L with TDS 77.8 mg/L in this Los Angeles County California city.