Lennox Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
mixed
pH Level
8.2
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
496.7 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 Lennox, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Lennox | 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 Lennox compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Lennox, California | ≈ 120–179 mg/L | 6.7 ppt | 🟠 Hard | mixed |
| Hawthorne, California | 270 mg/L | 0 ppt | 🔴 Very Hard | reservoir |
| Inglewood, California | 218 mg/L | 8.8 ppt | 🔴 Very Hard | reservoir |
| Del Aire, California | ≈ 120–179 mg/L | 6.2 ppt | 🟠 Hard | mixed |
| Westmont, California | ≈ 120–179 mg/L | 4.2 ppt | 🟠 Hard | mixed |
National Benchmark
How Lennox compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Lennox | ≈ 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 Lennox's Water Unique?
Local geology and source profile
Lennox is a small community in Los Angeles County, California, with water service provided by California American Water or the West Basin Municipal Water District. Both draw supply from the Metropolitan Water District (MWD), which delivers a Colorado River-dominant import blended with treated West Basin recycled and replenished groundwater. This mixed-source supply serves communities in the Los Angeles Basin near LAX. Residents seeking official utility identification, service details, and compliance data should check their water bill or contact the Los Angeles County Department of Public Health, Environmental Health Division.
Lennox's water supply is shaped by its MWD-sourced blend. The Colorado River Aqueduct component carries mineral loads derived from the Colorado Plateau's carbonate and evaporite geology, introducing elevated calcium, magnesium, and TDS into the supply. This is blended with treated West Basin recycled and replenished groundwater. The Colorado Plateau-dominant MWD blend produces moderately hard water with elevated TDS typical of Colorado River aqueduct supply reaching communities in the Los Angeles Basin near LAX.
Lennox's moderately hard water produces gradual scale buildup in household appliances and plumbing fixtures. Water heaters, dishwashers, and washing machines experience mineral accumulation over time, reducing efficiency and potentially shortening equipment lifespan. Regular descaling is advisable for high-use appliances. A water softener may benefit households with sensitive plumbing. Residents seeking verified water hardness, contaminant levels, and compliance data should request the most recent Consumer Confidence Report from their serving utility or consult the EPA's Safe Drinking Water Information System (SDWIS).
Geology & Source: Los Angeles County near LAX; California American Water or West Basin Municipal Water District draws MWD Colorado River-dominant import — Colorado Plateau carbonate and evaporite loads blend with West Basin groundwater producing moderately hard water
Other California Water Reports
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Frequently Asked Questions
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How does Lennox compare to the USA average?
Data Sources & Methodology
Water quality data for Lennox 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.