Hawaiian Gardens Water Hardness & Quality Report (2026)
Water Hardness
10.4 grains per gallon
Source
mixed
pH Level
8.2
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
543.3 mg/L
Est. Daily Cost
$0.47
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 Hawaiian Gardens, your appliances are currently losing 24% efficiency due to mineral buildup.
| Appliance | In Hawaiian Gardens | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.7 yrs | 8.5 yrs | -56% |
| Washing Machine | 7 yrs | 12 yrs | -42% |
| Water Heater | 8.5 yrs | 15 yrs | -43% |
Regional Water Comparison
How Hawaiian Gardens compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Hawaiian Gardens, California | 177.5 mg/L | 7 ppt | 🟠 Hard | mixed |
| Cerritos, California | 46.5 mg/L | 3.2 ppt | 🟢 Soft | mixed |
| La Palma, California | 45 mg/L | 3.2 ppt | 🟢 Soft | mixed |
| Artesia, California | 180.5 mg/L | 7.1 ppt | 🔴 Very Hard | mixed |
| Cypress, California | 74 mg/L | 4 ppt | 🟡 Moderately Hard | mixed |
National Benchmark
How Hawaiian Gardens compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Hawaiian Gardens | 177.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Hawaiian Gardens's Water Unique?
Local geology and source profile
Hawaiian Gardens, California, in Los Angeles County — a Los Angeles County city adjacent to Lakewood and Cerritos in the southeast LA metro — receives its water from the Golden State Water Company or LA County Waterworks, drawing from Metropolitan Water District (MWD) Colorado River and SWP imports (Los Angeles County) through the southeast LA metro distribution.
The hard 177.5 mg/L hardness and elevated TDS of 543.3 mg/L (high TDS relative to hardness — reflecting the Colorado River MWD import's significant sulfate and chloride dissolved mineral contribution) are harder than the LA city direct supply (LA proper: ~133 mg/L) — reflecting the southeast LA County groundwater zone's more concentrated MWD distribution blend. The MWD Colorado River supply carries dissolved minerals from Permian evaporitic Colorado Plateau formations (gypsum and halite — dominant TDS contributor) and Cretaceous Kaibab Limestone (calcareous — primary hardness contributor).
At 177.5 mg/L, Hawaiian Gardens' water is hard — scale builds steadily in kettles and appliances, dishwashers benefit from rinse aid, and water heaters should be descaled annually. Monthly descaling is recommended. The PFAS level of 7.0 ppt warrants a certified drinking water filter — Los Alamitos Army Reserve Center (Orange County — AFFF, adjacent to southeast LA County) and the southeast LA metro industrial corridor contribute to Hawaiian Gardens' readings.
Geology & Source: Hawaiian Gardens in Los Angeles County draws from the Golden State Water Company on MWD Colorado River and State Water Project imports (Los Angeles County, southeast Los Angeles metro) — MWD delivers Colorado River water blended with SWP Northern California imports — California Los Angeles County MWD Colorado River-SWP mixed supply produces hard water at 177.5 mg/L with TDS 543.3 mg/L.