Arizona City Water Hardness & Quality Report (2026)
Water Hardness
23.1 grains per gallon
Source
mixed
pH Level
8.5
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
1170.1 mg/L
Est. Daily Cost
$1.00
energy & soap waste
Source: USGS Water Quality Portal · 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 Arizona City, your appliances are currently losing 45% efficiency due to mineral buildup.
| Appliance | In Arizona City | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3 yrs | 12 yrs | -75% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Arizona City compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Arizona City, Arizona | 395.5 mg/L | 5.3 ppt | 🔴 Very Hard | mixed |
| Eloy, Arizona | 141 mg/L | 2.3 ppt | 🟠 Hard | mixed |
| Casa Grande, Arizona | 415.5 mg/L | 5.5 ppt | 🔴 Very Hard | mixed |
| Coolidge, Arizona | 346.5 mg/L | 4.7 ppt | 🔴 Very Hard | mixed |
| Florence, Arizona | 232.5 mg/L | 3.4 ppt | 🔴 Very Hard | mixed |
National Benchmark
How Arizona City compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Arizona City | 395.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Arizona City's Water Unique?
Local geology and source profile
Arizona City, Arizona, in Pinal County — a Pinal County unincorporated community adjacent to Eloy and Coolidge in the Sonoran Desert of south-central Arizona — receives its water from the Arizona City Special Utility District, drawing from the Central Arizona Project (CAP) and local groundwater wells through the south-central Arizona distribution.
The extremely hard 395.5 mg/L hardness and very high TDS of 1,170.1 mg/L reflect the Pinal County supply's extreme evaporitic Sonoran Desert character — the Miocene Gila Conglomerate and Quaternary Santa Cruz Basin alluvium are evaporitic-calcareous formations in the Sonoran Desert Basin; the local groundwater wells draw from deep, mineral-rich basin alluvium where millenia of evaporation concentrate extreme gypsum, calcium, and sodium content (compare Eloy AZ: 390/1152 in Pinal County comparable; Coolidge AZ: 400/1188 in Pinal County comparable; Arizona City consistent extremely hard from the same Pinal County CAP/well blended Miocene evaporitic supply). The South-central Arizona basin supply — Miocene Gila Conglomerate (evaporitic calcareous — primary hardness contributor), Quaternary Santa Cruz Basin alluvium (evaporitic calcareous — secondary contributor), and Holocene Sonoran Desert playa (evaporitic — TDS contributor).
At 395.5 mg/L with TDS 1,170, Arizona City's water is extremely hard — a whole-house water softener is essential. A reverse osmosis system is strongly recommended for drinking due to very high TDS. The PFAS level of 5.3 ppt warrants a certified drinking water filter. Review the Arizona City Special Utility District's annual water quality report.
Geology & Source: Arizona City in Pinal County draws from the Arizona City Water on the Central Arizona Project and local wells (Pinal County, south-central Arizona) — the Sonoran Desert at Pinal County draws from Miocene Gila Conglomerate (evaporitic calcareous) and Quaternary Santa Cruz Basin alluvium (evaporitic calcareous) — Arizona Pinal County CAP/well blended Miocene evaporitic supply produces extremely hard water at 395.5 mg/L with TDS 1170.1 mg/L.