How does Arizona City's water compare to the national average?

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

Arizona City Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

groundwater

pH Level

8.5

neutral = 7.0

Lead

0.007 mg/L

✓ Below action level

TDS

1170.1 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 Arizona City, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Arizona City	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 Arizona City compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Arizona City, Arizona	≈ 120–179 mg/L	5.3 ppt	🟠 Hard	groundwater
Eloy, Arizona	≈ 180+ mg/L	0 ppt	🔴 Very Hard	groundwater
Casa Grande, Arizona	≈ 180+ mg/L	0 ppt	🔴 Very Hard	groundwater
Coolidge, Arizona	≈ 120–179 mg/L	4.7 ppt	🟠 Hard	groundwater
Florence, Arizona	≈ 120–179 mg/L	94.1 ppt	🟠 Hard	groundwater

National Benchmark

How Arizona City compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Arizona City	≈ 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 Arizona City's Water Unique?

Local geology and source profile

Source: GroundwaterTDS: 1170.1 mg/LpH: 8.5

Arizona City, a small community in Pinal County, Arizona, receives its water from local utilities. The supply is a mix, drawing from the Pinal County groundwater basin and potentially surface water from the Central Arizona Project. Unfortunately, the specific utility names and treatment plant locations serving the Arizona City community were not readily available through online searches. The water's journey begins in the Pinal County groundwater basin, a system of Tertiary and Quaternary alluvial aquifers that sit atop much older Precambrian granite and metamorphic basement rocks.

These underlying geological formations are the source of the water's mineral content. As water percolates through the Tertiary and Quaternary deposits and the Precambrian basement, it dissolves minerals, especially calcium and magnesium compounds. This natural process leads to the hard water that is characteristic of many water supplies throughout central Arizona, including Arizona City.

Homeowners in Arizona City might notice scale buildup forming in appliances like water heaters and dishwashers, as well as on pipes and fixtures. This hard water can also leave spots on dishes and reduce the efficiency of water-using appliances. While these effects are common nuisances, they don't pose a health risk. Many residents find that installing a water softener helps manage these issues. For the most current and detailed water quality reports, contacting the local water utility or the Arizona Department of Environmental Quality is recommended.

Geology & Source: Pinal County groundwater basin; alluvial deposits over granite and metamorphic basement rocks contribute to hardness

Other Arizona Water Reports

Eloy

≈ 180+ mg/L

🔴 Very Hard

Casa Grande

≈ 180+ mg/L

🔴 Very Hard

Coolidge

≈ 120–179 mg/L

🟠 Hard

Florence

≈ 120–179 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 Arizona City's water safe to drink?

Yes. Arizona City'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 Arizona City?

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

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