North Hollywood Water Hardness & Quality Report (2026)
Water Hardness
5.3 grains per gallon
Source
mixed
pH Level
7.6
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
221.4 mg/L
Est. Daily Cost
$0.24
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 North Hollywood, your appliances are currently losing 12% efficiency due to mineral buildup.
| Appliance | In North Hollywood | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.6 yrs | 8.5 yrs | -22% |
| Washing Machine | 10.2 yrs | 12 yrs | -15% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How North Hollywood compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ North Hollywood, California | 91 mg/L | 4.5 ppt | 🟡 Moderately Hard | mixed |
| Studio City, California | 164 mg/L | 6.7 ppt | 🟠 Hard | mixed |
| Universal City, California | 176.5 mg/L | 7 ppt | 🟠 Hard | mixed |
| Valley Glen, California | 106.5 mg/L | 5 ppt | 🟡 Moderately Hard | mixed |
| Burbank, California | 131 mg/L | 5.7 ppt | 🟠 Hard | mixed |
National Benchmark
How North Hollywood compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ North Hollywood | 91 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes North Hollywood's Water Unique?
Local geology and source profile
North Hollywood, California — a major neighborhood in the east-central San Fernando Valley within the City of Los Angeles, anchored by the NoHo Arts District and the Academy of Television Arts and Sciences — 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), State Water Project (SWP) imports (Sacramento–Feather River — very soft), and local San Fernando Valley Groundwater Basin wells. Water hardness in North Hollywood measures 91 mg/L — classified as moderately soft.
North Hollywood's moderately soft supply reflects the east-central San Fernando Valley LADWP distribution zone. The North Hollywood–Studio City corridor lies in the eastern San Fernando Valley near the Cahuenga Pass, served from the LADWP's East Valley Service Area. The North Hollywood distribution receives a LADWP blend emphasizing the soft Owens Valley and SWP imports, with a lower proportion of local San Fernando Valley Groundwater Basin pumping than the north-central Valley zones (Northridge: 112 mg/L). The east Valley LADWP distribution infrastructure in the NoHo area is of moderate vintage (1940s–1960s studio-era development), and the SWP fraction in the east Valley supply is substantial, maintaining the moderately soft 91 mg/L supply.
With hardness at 91 mg/L, North Hollywood residents enjoy moderately soft water with minimal scale challenges. 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 east-central San Fernando Valley North Hollywood–Studio City corridor; moderately soft supply at 91 mg/L — somewhat softer than the city average — reflecting the North Hollywood LADWP distribution zone's supply blend.