Canoga Park Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
mixed
pH Level
7.7
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
245.3 mg/L
Est. Daily Cost
$0.40
energy & soap waste
Source: See methodology section below · 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 Canoga Park, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Canoga Park | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Canoga Park compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Canoga Park, California | ≈ 120–179 mg/L | 4.8 ppt | 🟠 Hard | mixed |
| Winnetka, California | ≈ 120–179 mg/L | 7.3 ppt | 🟠 Hard | mixed |
| Woodland Hills, California | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | reservoir |
| West Hills, California | ≈ 120–179 mg/L | 4.5 ppt | 🟠 Hard | mixed |
| Chatsworth, California | ≈ 120–179 mg/L | 3.9 ppt | 🟠 Hard | mixed |
National Benchmark
How Canoga Park compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Canoga Park | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Canoga Park's Water Unique?
Local geology and source profile
The Los Angeles Department of Water and Power (LADWP) provides water service to Canoga Park in the San Fernando Valley, Los Angeles County, California. Sources include local groundwater from the San Fernando Valley Groundwater Basin, imported surface water via the Los Angeles Aqueduct from the Owens Valley and the Second Los Angeles Aqueduct, plus treated Colorado River water through the Metropolitan Water District. Treatment occurs at the Jensen and Weymouth plants, with distribution through an extensive urban network serving over 4 million people.
Water originates from Eastern Sierra Nevada watersheds feeding the Owens River and Aqueduct, the Colorado River Basin, and local San Fernando recharge areas. The valley basin features Quaternary fluvial alluvial fills, with carbonate bedrock exposures in the Santa Susana and San Gabriel Mountains contributing dissolved minerals. This limestone-influenced aquifer system imparts a hard supply character through natural dissolution of calcium and magnesium-bearing rocks during percolation, with imported surface waters maintaining elevated mineral content overall.
Hard water in Canoga Park causes significant scale buildup in water heaters, dishwashers, washing machines, and pipes, leading to reduced efficiency, higher energy costs, and potential clogs. Maintenance includes regular descaling of fixtures, installing drain screens, and flushing hot water heaters annually. A water softener is recommended to extend appliance life and improve soap lathering. LADWP water meets all federal and state health standards; historical VOC groundwater plumes (TCE, PCE) beneath parts of Canoga Park are treated via extraction and reinjection to meet MCLs, with vapor intrusion mitigation advised for affected homes.
Geology & Source: San Fernando Valley Groundwater Basin — Quaternary alluvial sands and gravels over Pleistocene formations; Transverse Ranges limestone and dolomite fragments leach calcium and magnesium; imported Colorado River blend maintains hard character
Other California Water Reports
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Frequently Asked Questions
Is Canoga Park's water safe to drink?
Do I need a water softener in Canoga Park?
How does Canoga Park compare to the USA average?
Data Sources & Methodology
Water quality data for Canoga Park is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
Water Hardness
Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.
pH
Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.
TDS — Total Dissolved Solids
Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.
PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances
EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.
Lead
Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.
Appliance Lifespan
Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.