How does Adelanto's water compare to the national average?

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

Adelanto Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

groundwater

pH Level

8.3

neutral = 7.0

Lead

0.009 mg/L

✓ Below action level

TDS

591.1 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 Adelanto, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Adelanto	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 Adelanto compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Adelanto, California	≈ 120–179 mg/L	18.1 ppt	🟠 Hard	groundwater
Victorville, California	38.57 mg/L	0 ppt	🟢 Soft	reservoir
Hesperia, California	≈ 180+ mg/L	81.6 ppt	🔴 Very Hard	groundwater
Phelan, California	≈ 180+ mg/L	0 ppt	🔴 Very Hard	groundwater
Apple Valley, California	150 mg/L	33.3 ppt	🟠 Hard	groundwater

National Benchmark

How Adelanto compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Adelanto	≈ 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 Adelanto's Water Unique?

Local geology and source profile

Source: GroundwaterTDS: 591.1 mg/LpH: 8.3

Adelanto is served by the Town of Adelanto Water Department, supplying drinking water to the community in San Bernardino County, California. The utility draws its primary supply from groundwater sources within the Mojave River Basin aquifer system. The service area encompasses the town of Adelanto (ZIP 92301) and surrounding regions in the high desert of Southern California. No surface water sources are involved; the entire supply relies on local groundwater wells tapping the Mojave River Basin aquifer, with treatment through standard processes to ensure regulatory compliance.

The Mojave River Basin aquifer consists of Quaternary alluvial and lacustrine deposits underlain by Tertiary volcanic and sedimentary rock formations, characteristic of the Mojave Desert region. Groundwater flows through mineral-rich strata containing significant concentrations of calcium and magnesium carbonates. Prolonged contact between groundwater and these carbonate-bearing formations results in elevated mineral content, producing a hard water supply typical of desert basin aquifer systems in Southern California.

Hard water in Adelanto causes scale buildup in water heaters, reduced efficiency in washing machines and dishwashers, and increased soap consumption. Residents may benefit from point-of-use or whole-house water softening systems to extend appliance lifespan and improve cleaning effectiveness. Regular maintenance of water-using appliances is recommended to mitigate mineral deposit accumulation. Water quality testing indicates the supply meets federal legal limits for regulated contaminants, though 2 contaminants exceed EPA health-based guidelines (MCLGs). Vulnerable populations such as children and pregnant women may consider certified water filtration for additional protection.

Geology & Source: Mojave River Basin aquifer — Quaternary alluvial and lacustrine deposits overlying Tertiary volcanic and sedimentary formations; calcium and magnesium carbonates from carbonate-bearing strata produce hard character typical of Mojave Desert basin

Other California Water Reports

Victorville

38.57 mg/L

🟢 Soft

Hesperia

≈ 180+ mg/L

🔴 Very Hard

Phelan

≈ 180+ mg/L

🔴 Very Hard

Apple Valley

150 mg/L

🟠 Hard

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 Adelanto's water safe to drink?

Yes. Adelanto'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 Adelanto?

At ≈ 120–179 mg/L (Hard), Adelanto'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 Adelanto compare to the USA average?

The USA national average is 151 mg/L. Adelanto (≈ 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 Adelanto 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.