How does Del Aire's water compare to the national average?

The USA national average is 151 mg/L. Del Aire (≈ 120–179 mg/L) is 1 mg/L softer than average.

Del Aire Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

mixed

pH Level

neutral = 7.0

Lead

0.007 mg/L

✓ Below action level

TDS

421.6 mg/L

Est. Daily Cost

$0.40

energy & soap waste

Source: See methodology section below · Updated 2026

hard~120–179 mg/LHard · est.

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 Del Aire, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Del Aire	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 Del Aire compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Del Aire, California	≈ 120–179 mg/L	6.2 ppt	🟠 Hard	mixed
Hawthorne, California	270 mg/L	0 ppt	🔴 Very Hard	reservoir
Lennox, California	≈ 120–179 mg/L	6.7 ppt	🟠 Hard	mixed
Lawndale, California	≈ 120–179 mg/L	6.1 ppt	🟠 Hard	mixed
El Segundo, California	38 mg/L	0 ppt	🟢 Soft	reservoir

National Benchmark

How Del Aire compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Del Aire	≈ 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 Del Aire's Water Unique?

Local geology and source profile

Source: MixedTDS: 421.6 mg/LpH: 8

While specific water quality reports for Del Aire, California, remain elusive, the community, nestled in Los Angeles County, likely receives its supply from a blend of sources. This often includes imported water managed by the Metropolitan Water District and water drawn from local wells within the Los Angeles Basin. Treatment for this mixed supply is typically handled by regional providers or potentially a local utility, though the exact facilities serving Del Aire are not publicly detailed in readily accessible reports.

The geology underpinning Del Aire points to a mixed water profile. The region draws from both the Miocene Repetto Formation and Quaternary alluvium, both of which are described as calcareous. This calcareous nature of the bedrock and sediments means that dissolved minerals, particularly calcium and magnesium, are common in the groundwater, contributing significantly to the water's hardness and its total dissolved solids (TDS).

Homeowners in Del Aire may notice the effects of hard water on their appliances and plumbing. Scale buildup can reduce the efficiency of water heaters and dishwashers, and you might find that soap and detergents don't lather as well. Regularly descaling appliances can help. If hardness is a persistent issue, a water softener is often recommended to protect your home's systems and improve cleaning. For definitive information, contacting the Los Angeles County Department of Public Works or your direct water provider is the best course of action.

Geology & Source: Miocene calcareous; Quaternary calcareous alluvium; calcareous bedrock produces hard water

Other California Water Reports

Hawthorne

270 mg/L

🔴 Very Hard

Lennox

≈ 120–179 mg/L

🟠 Hard

Lawndale

≈ 120–179 mg/L

🟠 Hard

El Segundo

38 mg/L

🟢 Soft

Report an Issue

Notice an error or missing data? Help us keep this page accurate. If you spot incorrect water hardness, outdated utility info, or missing details, please let us know.

All reports are reviewed by our team. Thank you for supporting data quality!

Frequently Asked Questions

Is Del Aire's water safe to drink?

Yes. Del Aire's water meets all federal safety standards. The hardness is ≈ 120–179 mg/L (Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Del Aire?

At ≈ 120–179 mg/L (Hard), Del Aire's water will cause significant limescale on kettles, washing machines, and water heaters. A water softener or descaler is strongly recommended to extend appliance lifespan and reduce energy bills by up to 20%.

How does Del Aire compare to the USA average?

The USA national average is 151 mg/L. Del Aire (≈ 120–179 mg/L) is 1 mg/L below the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for Del Aire is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.

Estimated

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.

Estimated

Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.

Estimated

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.

Measured

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.

Modelled

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.

Calculated

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.