Lyndon Water Hardness & Quality Report (2026)
Water Hardness
9.7 grains per gallon
Source
river
pH Level
8.1
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
357.2 mg/L
Est. Daily Cost
$0.44
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 Lyndon, your appliances are currently losing 22% efficiency due to mineral buildup.
| Appliance | In Lyndon | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.1 yrs | 8.5 yrs | -52% |
| Washing Machine | 7.5 yrs | 12 yrs | -38% |
| Water Heater | 9 yrs | 15 yrs | -40% |
Regional Water Comparison
How Lyndon compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Lyndon, Kentucky | 166 mg/L | 5.4 ppt | 🟠 Hard | river |
| Saint Matthews, Kentucky | 161 mg/L | 5.3 ppt | 🟠 Hard | river |
| Jeffersontown, Kentucky | 105.5 mg/L | 4 ppt | 🟡 Moderately Hard | river |
| Fern Creek, Kentucky | 150 mg/L | 5 ppt | 🟠 Hard | river |
| Newburg, Kentucky | 195 mg/L | 6.1 ppt | 🔴 Very Hard | river |
National Benchmark
How Lyndon compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Lyndon | 166 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Lyndon's Water Unique?
Local geology and source profile
Lyndon, Kentucky, in Jefferson County — a Jefferson County unincorporated suburb adjacent to Jeffersontown and St. Matthews in the northeast Louisville metro — receives its water from Louisville Water Company, drawing from the Ohio River through the north-central Kentucky distribution.
The hard 166 mg/L hardness and TDS of 357.2 mg/L reflect the Jefferson County Ohio River supply's hard character — the Ohio River at Louisville drains the Indiana and Illinois coal basins which overlay Pennsylvanian and Mississippian calcareous limestone formations, with tributary waters contributing substantial dissolved mineral content (compare Jeffersontown KY: 163/350 in Jefferson County comparable; St. Matthews KY: 168/363 in Jefferson County comparable; Lyndon consistent hard from the same Jefferson County Ohio River Mississippian calcareous supply). The Ohio River at Jefferson County — Pennsylvanian Illinois Basin limestone runoff (calcareous — primary hardness contributor), Mississippian Salem Limestone (highly calcareous — secondary contributor), and Quaternary Ohio River alluvium (calcareous — TDS contributor).
At 166 mg/L with TDS 357, Lyndon's water is hard — scale builds in appliances and fixtures. Quarterly descaling is appropriate. The PFAS level of 5.4 ppt is moderate — a certified drinking water filter provides added protection. Review Louisville Water Company's annual water quality report.
Geology & Source: Lyndon in Jefferson County draws from the Louisville Water on the Ohio River (Jefferson County, north-central Kentucky) — the Ohio River at Jefferson County carries Pennsylvanian Illinois Basin limestone runoff (calcareous) and Mississippian Salem Limestone (highly calcareous) — Kentucky Jefferson County Ohio River Mississippian calcareous supply produces hard water at 166 mg/L with TDS 357.2 mg/L.