Reseda Water Hardness & Quality Report (2026)
Water Hardness
2.2 grains per gallon
Source
mixed
pH Level
7.2
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
78.9 mg/L
Est. Daily Cost
$0.10
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 Reseda, your appliances are currently losing 5% efficiency due to mineral buildup.
| Appliance | In Reseda | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.3 yrs | 8.5 yrs | -2% |
| Washing Machine | 12.2 yrs | 12 yrs | — |
| Water Heater | 14.1 yrs | 15 yrs | -6% |
Regional Water Comparison
How Reseda compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Reseda, California | 38.5 mg/L | 3 ppt | 🟢 Soft | mixed |
| Northridge, California | 112 mg/L | 5.1 ppt | 🟡 Moderately Hard | mixed |
| Winnetka, California | 185 mg/L | 7.3 ppt | 🔴 Very Hard | mixed |
| Encino, California | 88.5 mg/L | 4.5 ppt | 🟡 Moderately Hard | mixed |
| Canoga Park, California | 98.5 mg/L | 4.8 ppt | 🟡 Moderately Hard | mixed |
National Benchmark
How Reseda compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Reseda | 38.5 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Reseda's Water Unique?
Local geology and source profile
Reseda, California — a residential neighborhood in the west-central San Fernando Valley within the City of Los Angeles, known for the famous Tom Petty & the Heartbreakers song 'Free Fallin'' ('I was raised up believing') — receives its municipal water supply from the Los Angeles Department of Water and Power (LADWP), sourcing from a blend of Owens Valley Aqueduct (Eastern Sierra Nevada — very soft, 40–80 mg/L), State Water Project (SWP) imports (Sacramento–Feather River — very soft, 20–50 mg/L), and local San Fernando Valley Groundwater Basin wells. Water hardness in Reseda measures 38.5 mg/L — classified as very soft, the softest zone in the San Fernando Valley.
Reseda's extremely soft supply reflects the west-central San Fernando Valley LADWP distribution zone's dominance of soft aqueduct imports over local groundwater. The Reseda–Tarzana–Woodland Hills western Valley zone is served from the LADWP's Sepulveda Basin area distribution — one of the LADWP zones with the highest proportion of Owens Valley and SWP soft aqueduct water and the lowest local San Fernando Valley groundwater blending. Unlike the north-central Valley (Northridge: 112 mg/L) where local calcareous basin groundwater blending is higher, the western San Fernando Valley zones receive predominantly the soft imported supply from the Los Angeles Aqueduct system. The result is the extraordinary 38.5 mg/L softness.
With hardness at 38.5 mg/L, Reseda residents enjoy very soft water — soap lathers abundantly and scale is virtually non-existent. LADWP consistently delivers water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.
Geology & Source: Mixed supply from the Los Angeles Department of Water and Power (LADWP) — Owens Valley Aqueduct, State Water Project (SWP), and local San Fernando Valley Groundwater Basin wells — the west-central San Fernando Valley Reseda–Tarzana zone; very soft supply at 38.5 mg/L — the softest zone in the San Fernando Valley — reflecting the dominance of the soft Owens Valley and SWP imports at the LADWP west Valley treatment distribution.