Agoura Hills Water Hardness & Quality Report (2026)
Water Hardness
1.9 grains per gallon
Source
mixed
pH Level
7.2
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
65.2 mg/L
Est. Daily Cost
$0.09
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 Agoura Hills, your appliances are currently losing 4% efficiency due to mineral buildup.
| Appliance | In Agoura Hills | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.5 yrs | 8.5 yrs | — |
| Washing Machine | 12.4 yrs | 12 yrs | — |
| Water Heater | 14.3 yrs | 15 yrs | -5% |
Regional Water Comparison
How Agoura Hills compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Agoura Hills, California | 32.5 mg/L | 2.8 ppt | 🟢 Soft | mixed |
| Agoura, California | 32 mg/L | 2.8 ppt | 🟢 Soft | mixed |
| Oak Park, California | 138.5 mg/L | 5.9 ppt | 🟠 Hard | mixed |
| Thousand Oaks, California | 188 mg/L | 7.4 ppt | 🔴 Very Hard | mixed |
| Malibu, California | 90 mg/L | 4.5 ppt | 🟡 Moderately Hard | mixed |
National Benchmark
How Agoura Hills compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Agoura Hills | 32.5 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Agoura Hills's Water Unique?
Local geology and source profile
Agoura Hills, California, in Los Angeles County — a western Los Angeles County city in the Conejo Valley and Santa Monica Mountains corridor, adjacent to Westlake Village and the Malibu Creek State Park, a master-planned community developed from the former Agoura Ranch — receives its municipal water from the Las Virgenes Municipal Water District (LVMWD), which draws entirely from Metropolitan Water District of Southern California (MWD) import. The LVMWD service area in the western San Fernando Valley-Conejo Valley receives MWD supply primarily through the State Water Project (SWP) via the Calleguas-Las Virgenes Pipeline.
The very soft 32.5 mg/L hardness and very low TDS of 65.2 mg/L are remarkably soft for a Southern California community — reflecting the unique character of the LVMWD's primarily SWP supply, which draws from Northern California Sacramento-San Joaquin Delta import. The State Water Project sources water from the Sacramento River and its Sierra Nevada snowmelt tributaries — draining the Sierra Nevada batholith (Cretaceous granite and granodiorite — essentially carbonate-free crystalline rock) and the northern Sacramento Valley (some calcareous contribution). The SWP's Sierra Nevada snowmelt source is fundamentally different from the Colorado River Aqueduct (which carries much harder Colorado Plateau water). The LVMWD's nearly pure SWP supply produces one of the softest finished water supplies in Southern California — an unusual island of soft water in the hard-water SoCal landscape.
At 32.5 mg/L, Agoura Hills' water is very soft — excellent for household use. Scale essentially never forms, soap lathers abundantly, and appliances maintain maximum efficiency. Annual descaling is more than sufficient. The PFAS level of 2.8 ppt is excellent — among the lowest in the Los Angeles region, reflecting the LVMWD's pristine SWP supply, the Conejo Valley's primarily residential character, and the western Los Angeles County corridor's limited direct military-industrial PFAS sources.
Geology & Source: Agoura Hills in Los Angeles County is served by Las Virgenes Municipal Water District (LVMWD) on Metropolitan Water District (MWD) import — LVMWD receives primarily State Water Project supply (Sacramento-San Joaquin Delta) via the Calleguas-Las Virgenes Pipeline — Sierra Nevada granite snowmelt drainage produces very soft water at 32.5 mg/L with very low TDS 65 mg/L in this Los Angeles County city.