Blackfoot Water Hardness & Quality Report (2026)
Water Hardness
2.4 grains per gallon
Source
reservoir
pH Level
7.3
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
69.3 mg/L
Est. Daily Cost
$0.11
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 Blackfoot, your appliances are currently losing 6% efficiency due to mineral buildup.
| Appliance | In Blackfoot | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.2 yrs | 8.5 yrs | -4% |
| Washing Machine | 12.1 yrs | 12 yrs | — |
| Water Heater | 13.9 yrs | 15 yrs | -7% |
Regional Water Comparison
How Blackfoot compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Blackfoot, Idaho | 41.5 mg/L | 1.2 ppt | 🟢 Soft | reservoir |
| Chubbuck, Idaho | 49 mg/L | 1.3 ppt | 🟢 Soft | reservoir |
| Pocatello, Idaho | 36.5 mg/L | 1.1 ppt | 🟢 Soft | reservoir |
| Idaho Falls, Idaho | 44.5 mg/L | 1.3 ppt | 🟢 Soft | reservoir |
| Ammon, Idaho | 63.5 mg/L | 1.5 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Blackfoot compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Blackfoot | 41.5 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Blackfoot's Water Unique?
Local geology and source profile
Blackfoot, Idaho, in Bingham County — a Bingham County city adjacent to Shelley and Aberdeen on the Snake River Plain in southeast Idaho — receives its water from the City of Blackfoot Water Department, drawing from the Snake River reservoir system through the southeast Idaho distribution.
The very soft 41.5 mg/L hardness and very low TDS of 69.3 mg/L reflect the Bingham County Snake River supply's very soft volcanic character — the Quaternary Snake River Plain Basalt is a highly insoluble olivine basalt formation, and the glacial meltwater deposits of the eastern Snake River Plain are similarly insoluble, contributing negligible dissolved minerals to the crystal-clear Snake River (compare Shelley ID: 40/66 in Bingham County comparable; Aberdeen ID: 43/72 in Bingham County comparable; Blackfoot consistent very soft from the same Bingham County Snake River volcanic basalt supply). The Snake River at Bingham County — Quaternary Snake River Plain Basalt (insoluble — primary dilutant), Quaternary glacial meltwater (insoluble — secondary dilutant), and Holocene Snake River alluvium (insoluble — minimal TDS).
At 41.5 mg/L with TDS 69, Blackfoot's water is very soft — virtually no scale buildup, excellent soap lathering. The PFAS level of 1.2 ppt is very low — Blackfoot enjoys one of the cleanest water profiles in the Mountain West. Review the City of Blackfoot's annual water quality report for the latest data.
Geology & Source: Blackfoot in Bingham County draws from the City of Blackfoot Water on the Snake River reservoir (Bingham County, southeast Idaho) — the Snake River at Bingham County drains Quaternary Snake River Plain Basalt (insoluble) and Quaternary glacial meltwater deposits (insoluble) — Idaho Bingham County Snake River volcanic basalt supply produces very soft water at 41.5 mg/L with TDS 69.3 mg/L.