Azusa Water Hardness & Quality Report (2026)
Water Hardness
3 grains per gallon
Source
mixed
pH Level
7.3
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
111.4 mg/L
Est. Daily Cost
$0.14
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 Azusa, your appliances are currently losing 7% efficiency due to mineral buildup.
| Appliance | In Azusa | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.9 yrs | 8.5 yrs | -7% |
| Washing Machine | 11.7 yrs | 12 yrs | -3% |
| Water Heater | 13.5 yrs | 15 yrs | -10% |
Regional Water Comparison
How Azusa compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Azusa, California | 52 mg/L | 3.4 ppt | 🟢 Soft | mixed |
| Vincent, California | 167.5 mg/L | 6.8 ppt | 🟠 Hard | mixed |
| Glendora, California | 129 mg/L | 5.6 ppt | 🟠 Hard | mixed |
| Covina, California | 170 mg/L | 6.8 ppt | 🟠 Hard | mixed |
| Duarte, California | 94 mg/L | 4.6 ppt | 🟡 Moderately Hard | mixed |
National Benchmark
How Azusa compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Azusa | 52 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Azusa's Water Unique?
Local geology and source profile
Azusa, California, in the east San Gabriel Valley of Los Angeles County at the San Gabriel River Canyon mouth — 'The Canyon City,' a diverse east San Gabriel Valley community known for the San Gabriel River Canyon (Morris Reservoir, San Gabriel Dam), Citrus College, and a large Latino community, historically a Native American (Tongva) village site at the San Gabriel Mountains mouth — draws its municipal water supply from the San Gabriel River alluvial fan and SGVMWD MWD imports via the City of Azusa Light and Water Division. Water hardness in Azusa measures 52 mg/L — classified as very soft.
Azusa's very soft supply — extraordinarily soft for a San Gabriel Valley community — reflects Azusa's unique position at the San Gabriel Mountains canyon mouth. The Azusa–Irwindale San Gabriel River Spreading Grounds (the largest water spreading facility in California) receive direct San Gabriel River canyon outflow — soft Sierra Nevada–Transverse Range granite snowmelt from the San Gabriel Mountains (San Gabriel Anorthosite Complex and Mount Baldy Granodiorite — calcium-poor crystalline mountain terrain). This very soft canyon outflow recharges the local alluvial aquifer directly, and City of Azusa Light and Water's wells in the canyon-mouth alluvial fan pump this fresh, soft mountain recharge, producing the very soft 52 mg/L — one of the softest supplies in the San Gabriel Valley.
With hardness at 52 mg/L, Azusa residents enjoy very soft water for a San Gabriel Valley community. City of Azusa Light and Water Division consistently delivers water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.
Geology & Source: Mixed supply from the San Gabriel Valley Municipal Water District (SGVMWD) MWD import and local San Gabriel River alluvial fan wells via the City of Azusa Light and Water Division — the east San Gabriel Valley Azusa–Irwindale San Gabriel River Spreading Grounds and the Azusa Valley Water Company zone; very soft supply at 52 mg/L — reflecting Azusa's water treatment and San Gabriel River soft alluvial recharge.