Signal Hill 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
229.1 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 Signal Hill, your appliances are currently losing 12% efficiency due to mineral buildup.
| Appliance | In Signal Hill | 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 Signal Hill compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Signal Hill, California | 93.5 mg/L | 4.6 ppt | 🟡 Moderately Hard | mixed |
| Long Beach, California | 129.5 mg/L | 5.6 ppt | 🟠 Hard | mixed |
| Lakewood, California | 98 mg/L | 4.7 ppt | 🟡 Moderately Hard | mixed |
| Rossmoor, California | 154 mg/L | 6.4 ppt | 🟠 Hard | mixed |
| Paramount, California | 147 mg/L | 6.2 ppt | 🟠 Hard | mixed |
National Benchmark
How Signal Hill compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Signal Hill | 93.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
Bring Badger-quality water to your Signal Hill home
Shop water softeners on Amazon.com →
What Makes Signal Hill's Water Unique?
Local geology and source profile
Signal Hill, California, in Los Angeles County — a Los Angeles County city adjacent to Long Beach and Lakewood on the Signal Hill oil field mesa in south California — receives its water from the Long Beach Water Department or Golden State Water Company, drawing from Metropolitan Water District (MWD) Colorado River and State Water Project imports through the south California distribution.
The soft 93.5 mg/L hardness and TDS of 229.1 mg/L reflect the Los Angeles County MWD import supply's moderate character — the Colorado River import is blended with State Water Project supplies, which together produce the typical soft-to-moderate hardness of the Los Angeles coastal basin (compare Long Beach CA: 91/224 in Los Angeles County comparable; Lakewood CA: 96/234 in Los Angeles County comparable; Signal Hill consistent soft from the same Los Angeles County MWD Colorado River supply). The LA Basin — Cretaceous Peninsular Ranges Batholith (insoluble — dilutant), Tertiary Los Angeles Basin sediment (calcareous — primary hardness contributor), and Quaternary LA River alluvium (calcareous — TDS contributor).
At 93.5 mg/L with TDS 229, Signal Hill's water is soft — minimal scale buildup. Annual descaling is appropriate. The PFAS level of 4.6 ppt is moderate — a certified drinking water filter provides added protection. Review Long Beach Water's annual water quality report for the latest monitoring data.
Geology & Source: Signal Hill in Los Angeles County draws from the Long Beach Water on Colorado River aqueduct (Los Angeles County, south California) — the LA Basin at Los Angeles County drains Cretaceous Peninsular Ranges Batholith (insoluble) and Tertiary Los Angeles Basin sediment (calcareous) — California Los Angeles County MWD Colorado River supply produces soft water at 93.5 mg/L with TDS 229.1 mg/L.