How does Apple Valley's water compare to the national average?

The USA national average is 151 mg/L. Apple Valley (150 mg/L) is 1 mg/L softer than average.

Apple Valley Water Hardness & Quality Report (2026)

Water Hardness

150mg/L

Hard

8.8 grains per gallon

Source

groundwater

pH Level

neutral = 7.0

Lead

0.007 mg/L

✓ Below action level

TDS

425.9 mg/L

Est. Daily Cost

$0.40

energy & soap waste

Source: See methodology section below · Updated 2026

150mg/L as CaCO₃Hard

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 Apple Valley, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Apple Valley	Soft Water City	Efficiency Loss
Kettle	4.6 yrs	8.5 yrs	-46%
Washing Machine	8.1 yrs	12 yrs	-33%
Water Heater	9.6 yrs	15 yrs	-36%

Regional Water Comparison

How Apple Valley compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Apple Valley, California	150 mg/L	33.3 ppt	🟠 Hard	groundwater
Victorville, California	38.57 mg/L	0 ppt	🟢 Soft	reservoir
Hesperia, California	≈ 180+ mg/L	81.6 ppt	🔴 Very Hard	groundwater
Adelanto, California	≈ 120–179 mg/L	18.1 ppt	🟠 Hard	groundwater
Lake Arrowhead, California	≈ 120–179 mg/L	258.4 ppt	🟠 Hard	reservoir

National Benchmark

How Apple Valley compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Apple Valley	150 mg/L	🟠 Moderate
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes Apple Valley's Water Unique?

Local geology and source profile

Source: GroundwaterTDS: 425.9 mg/LpH: 8

Apple Valley's water is supplied by multiple utilities including Golden State Water Company (Apple Valley North and South systems), Liberty Utilities Apple Valley, and Apple Valley Foothill County Water District. These systems pump 100% groundwater from 19–20 deep wells in the Alto sub-unit of the Mojave groundwater basin, with some purchasing blended water from Apple Valley Ranchos Water Company or Liberty Utilities. The service area covers approximately 81% of the Town of Apple Valley and surrounding portions of San Bernardino County, California. No surface water reservoirs or rivers are directly used; all supply comes from this confined aquifer, with treatment limited to disinfection and blending.

The watershed encompasses the upper Mojave River Basin-Alto Sub-Basin, fed by precipitation and snowmelt from the San Bernardino Mountains, percolating through alluvial fans into the deep aquifer. Geologically, the Alto sub-unit consists of Cenozoic alluvial and sedimentary formations, including unconsolidated sands, gravels, and clays overlying older Tertiary volcanics, which weather to release alkaline earth metals. This geology results in a hard supply with elevated mineral content from prolonged contact with calcium- and magnesium-rich strata, contributing to higher alkalinity and total dissolved solids typical of basin-fill aquifers in arid Southern California.

Scale buildup is a major issue at this hardness level, clogging pipes, reducing water heater efficiency by up to 20–30%, and shortening the lifespan of dishwashers, washing machines, and coffee makers. Maintenance tips include regular vinegar descaling for fixtures, installing scale-inhibiting showerheads, and flushing water heaters annually. A whole-house salt-free conditioner or traditional water softener is highly recommended, with potential savings on energy and detergents paying back the investment over 10–13 years. Arsenic exceeds health guidelines in some tests due to natural leaching from local soils and bedrock; calcium measures 38–62 mg/L and alkalinity 49–70 mg/L in quality reports.

Geology & Source: Mojave River Basin-Alto Sub-Basin — Cenozoic Quaternary alluvium and Tertiary sedimentary deposits overlying older volcanics; limestone and dolomite-bearing strata dissolve into deep groundwater; prolonged arid-basin residence yields hard supply

Other California Water Reports

Victorville

38.57 mg/L

🟢 Soft

Hesperia

≈ 180+ mg/L

🔴 Very Hard

Adelanto

≈ 120–179 mg/L

🟠 Hard

Lake Arrowhead

≈ 120–179 mg/L

🟠 Hard

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Frequently Asked Questions

Is Apple Valley's water safe to drink?

Yes. Apple Valley's water meets all federal safety standards. The hardness is 150 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 Apple Valley?

At 150 mg/L (Hard), Apple Valley'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 Apple Valley compare to the USA average?

The USA national average is 151 mg/L. Apple Valley (150 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 Apple Valley 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.