West Lafayette Water Hardness & Quality Report (2026)
Water Hardness
8.2 grains per gallon
Source
river
pH Level
7.8
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
234 mg/L
Est. Daily Cost
$0.38
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 West Lafayette, your appliances are currently losing 19% efficiency due to mineral buildup.
| Appliance | In West Lafayette | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.9 yrs | 8.5 yrs | -42% |
| Washing Machine | 8.4 yrs | 12 yrs | -30% |
| Water Heater | 10 yrs | 15 yrs | -33% |
Regional Water Comparison
How West Lafayette compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ West Lafayette, Indiana | 141 mg/L | 4.1 ppt | 🟠 Hard | river |
| Lafayette, Indiana | 272 mg/L | 8.8 ppt | 🔴 Very Hard | river |
| Crawfordsville, Indiana | 240.5 mg/L | 7.7 ppt | 🔴 Very Hard | river |
| Frankfort, Indiana | 148.5 mg/L | 4.4 ppt | 🟠 Hard | river |
| Lebanon, Indiana | 125 mg/L | 3.5 ppt | 🟠 Hard | river |
National Benchmark
How West Lafayette compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ West Lafayette | 141 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes West Lafayette's Water Unique?
Local geology and source profile
West Lafayette, Indiana, in Tippecanoe County — home of Purdue University (founded 1869, one of the Big Ten's premier research universities, known for engineering, agriculture, and aviation programs — more US astronauts are Purdue graduates than from any other university), a vibrant college city adjacent to Lafayette on the Wabash River, and a major Indiana higher education and research community — draws its municipal water supply from the Wabash River alluvial aquifer via the City of West Lafayette Water Division. Water hardness in West Lafayette measures 141 mg/L — classified as moderately hard.
West Lafayette's moderate hardness reflects the Wabash River Valley's calcareous glacial terrain. The Wabash River Valley alluvial aquifer at Tippecanoe County is recharged from: Tippecanoe County Wisconsin Age calcareous glacial outwash (Wabash Valley outwash train — highly calcareous outwash from the Michigan Basin Silurian Niagara Dolomite and Devonian Traverse Formation calcareous terrain deposited by the Laurentide Ice Sheet Wabash Lobe); the Silurian Niagara Dolomite subcropping at moderate depth in north-central Indiana (contributing dissolved calcium to the alluvial aquifer); and the Wabash River alluvial recharge. The calcareous Wabash Valley outwash produces the moderate 141 mg/L at West Lafayette.
At 141 mg/L, West Lafayette residents encounter moderate scale accumulation. Faucet aerators and showerheads develop deposits after several months — monthly cleaning with citric acid solution is practical maintenance. City of West Lafayette Water Division consistently delivers water meeting all Indiana IDEM and EPA Safe Drinking Water Act requirements.
Geology & Source: Groundwater from the Wabash River alluvial aquifer and the Wabash River via the City of West Lafayette Water Division — the Tippecanoe County north-central Indiana Wabash Valley (Wisconsin Age calcareous glacial outwash from the Michigan Basin Silurian–Devonian dolomite — the Wabash River calcareous outwash plain); moderately hard supply at 141 mg/L in Tippecanoe County.