Redondo Beach Water Hardness & Quality Report (2026)
Water Hardness
10.5 grains per gallon
Source
mixed
pH Level
8.2
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
552.7 mg/L
Est. Daily Cost
$0.48
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 Redondo Beach, your appliances are currently losing 24% efficiency due to mineral buildup.
| Appliance | In Redondo Beach | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.7 yrs | 8.5 yrs | -56% |
| Washing Machine | 7 yrs | 12 yrs | -42% |
| Water Heater | 8.4 yrs | 15 yrs | -44% |
Regional Water Comparison
How Redondo Beach compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Redondo Beach, California | 179.5 mg/L | 7.1 ppt | 🟠 Hard | mixed |
| Hermosa Beach, California | 60 mg/L | 3.6 ppt | 🟡 Moderately Hard | mixed |
| Manhattan Beach, California | 102 mg/L | 4.8 ppt | 🟡 Moderately Hard | mixed |
| Palos Verdes Estates, California | 132.5 mg/L | 5.7 ppt | 🟠 Hard | mixed |
| Torrance, California | 63.5 mg/L | 3.7 ppt | 🟡 Moderately Hard | mixed |
National Benchmark
How Redondo Beach compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Redondo Beach | 179.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Redondo Beach's Water Unique?
Local geology and source profile
Redondo Beach, California, in Los Angeles County on the South Bay Peninsula — a major South Bay beach city in the Los Angeles metropolitan area — draws its municipal water supply through the City of Redondo Beach Department of Public Works, sourcing from the West Basin Municipal Water District (WBMWD) which delivers a blend of Metropolitan Water District of Southern California (MWD) imported water (Colorado River Aqueduct and State Water Project) and locally treated recycled/blended water from the West Coast Basin advanced water purification program. Water hardness in Redondo Beach measures 179.5 mg/L — classified as hard.
Redondo Beach's hard supply reflects the West Basin South Bay distribution zone's supply blend. The Colorado River Aqueduct water (very hard, ~400 mg/L raw from Lake Havasu) blended with the softer SWP and recycled water fractions produces a moderately hard to hard finished supply throughout the South Bay WBMWD distribution zone. The West Coast Basin advanced water purification (recycled water from municipal wastewater treated to drinking water quality) passes through the Los Angeles Coastal Plain geology before distribution, where contact with the Quaternary Pleistocene marine terrace deposits and beach sand formations adds moderate dissolved calcium. The 179.5 mg/L is consistent with the South Bay WBMWD zone hardness.
At 179.5 mg/L, Redondo Beach residents face regular hard water challenges. Scale deposits form on faucet aerators, showerheads, and appliances within weeks — monthly descaling with citric acid solution is standard maintenance. West Basin Municipal Water District consistently delivers water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.
Geology & Source: Mixed supply from West Basin Municipal Water District (WBMWD) — Metropolitan Water District (MWD) imports (Colorado River Aqueduct and State Water Project) and local West Coast Basin (Los Angeles Coastal Plain) recycled/blended groundwater via the City of Redondo Beach Department of Public Works — the Los Angeles South Bay coastal distribution zone; hard supply at 179.5 mg/L in Los Angeles County.