Tooele Water Hardness & Quality Report (2026)
Water Hardness
17.4 grains per gallon
Source
mixed
pH Level
8.5
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
854.4 mg/L
Est. Daily Cost
$0.79
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 Tooele, your appliances are currently losing 40% efficiency due to mineral buildup.
| Appliance | In Tooele | 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 Tooele compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Tooele, Utah | 298 mg/L | 4.1 ppt | 🔴 Very Hard | mixed |
| Magna, Utah | 237 mg/L | 3.2 ppt | 🔴 Very Hard | mixed |
| Herriman, Utah | 284.5 mg/L | 3.9 ppt | 🔴 Very Hard | mixed |
| Kearns, Utah | 153.5 mg/L | 1.9 ppt | 🟠 Hard | mixed |
| West Valley City, Utah | 164 mg/L | 2.1 ppt | 🟠 Hard | mixed |
National Benchmark
How Tooele compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Tooele | 298 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Tooele's Water Unique?
Local geology and source profile
Tooele, Utah, the Tooele County seat — a major north Utah Tooele Valley community (Tooele is the Tooele County seat — a significant north Utah Great Basin valley city at the foot of the Oquirrh Mountains, adjacent to the former Bonneville Salt Flats and the site of the historic Tooele Army Depot — one of the US military's oldest and most significant chemical weapons storage and demilitarization facilities), home of a significant mining history (the Oquirrh Mountains and Tooele Valley have been major copper and precious metal mining areas, with the Bingham Canyon copper mine just over the Oquirrh Mountains ridge in Salt Lake County), a diverse Tooele County community with a significant military professional, LDS (Mormon), and working-class population, and one of the fastest-growing communities in Utah from 2000–2020 — draws its municipal water supply via the Tooele City Water Division. Water hardness in Tooele measures 298 mg/L — classified as extremely hard.
Tooele's extremely hard supply reflects the Great Basin closed-basin geology's extreme mineral accumulation. The Tooele Valley basin aquifer at Tooele County draws from: the Quaternary Lake Bonneville lacustrine deposits (calcareous and evaporite — saline lake bed carbonate and sulfate deposits of the ancient Lake Bonneville shoreline); and the Pennsylvanian Oquirrh Formation (highly calcareous limestone and dolomite). The closed Great Basin drainage produces the extremely hard 298 mg/L.
At 298 mg/L, Tooele residents face severe hard water challenges. Water softeners and regular appliance descaling are essential. Tooele City Water Division consistently delivers water meeting all Utah DEQ and EPA Safe Drinking Water Act requirements.
Geology & Source: Mixed supply from the Tooele Valley groundwater basin and Oquirrh Mountains snowmelt via the Tooele City Water Division — the Tooele County north Utah Tooele Valley (Quaternary calcareous Lake Bonneville lacustrine deposits and Pennsylvanian calcareous Oquirrh Formation — the highly calcareous Tooele Valley Great Basin closed-basin supply; high dissolved carbonate and evaporite); extremely hard supply at 298 mg/L in Tooele County.