Lyndon Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
river
pH Level
7
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
357.2 mg/L
Est. Daily Cost
$0.40
energy & soap waste
Source: See methodology section below · 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 20% efficiency due to mineral buildup.
| Appliance | In Lyndon | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Lyndon compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Lyndon, Kentucky | ≈ 120–179 mg/L | 5.4 ppt | 🟠 Hard | river |
| Saint Matthews, Kentucky | ≈ 120–179 mg/L | 5.3 ppt | 🟠 Hard | river |
| Jeffersontown, Kentucky | 115 mg/L | 4 ppt | 🟡 Moderately Hard | river |
| Fern Creek, Kentucky | ≈ 120–179 mg/L | 5 ppt | 🟠 Hard | river |
| Newburg, Kentucky | ≈ 120–179 mg/L | 6.1 ppt | 🟠 Hard | river |
National Benchmark
How Lyndon compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Lyndon | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Lyndon's Water Unique?
Local geology and source profile
Lyndon, Kentucky, gets its drinking water from Louisville Water Company, the main utility for Jefferson County and nearby areas, including Lyndon in Louisville's eastern suburbs. The water comes from the Ohio River and is treated at two large facilities: the Louisville Water Treatment Plant (also known as Pumping Station No. 1) and the Riverton Treatment Plant. These plants process the raw river water for more than a million people in the Louisville metro area. Lyndon is part of this service area, and there's no separate local water system.
The Ohio River watershed covers the Appalachian foreland basin, where sedimentary rocks from the Ordovician to Pennsylvanian periods, including thick layers of fossil-rich limestones and shales, are common. In Kentucky, the Mississippian-era Blue Grass region contains karst aquifers within dolomite and limestone, which naturally add a lot of minerals to the water. The river's water chemistry shows it picks up these dissolved minerals from the carbonate formations, resulting in a hard water supply that tends to build up scale. Lyndon doesn't rely on a specific groundwater aquifer; its water supply is influenced by surface water from the river and the limestone-rich geology upstream.
This hard water means you'll likely see moderate scale buildup in appliances like dishwashers, washing machines, and water heaters, which can make them less efficient and require more frequent cleaning. Faucet aerators and showerheads might get clogged within a year, and you'll probably notice deposits in tea kettles. To manage this, consider monthly vinegar soaks for fixtures and annual flushes for your water heater. Installing a whole-house water softener is a good idea for homes with appliances that are frequently affected by scale, as it can help extend their lifespan and make soaps and detergents work better. Louisville Water aims to keep the water pH between 7.5 and 8.5 to prevent corrosion and meets all EPA standards, including those for lead and copper.
Geology & Source: Ohio River watershed; Paleozoic limestone and dolomite formations of the Mississippian and Devonian periods contribute to hard water.
Other Kentucky Water Reports
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Frequently Asked Questions
Is Lyndon's water safe to drink?
Do I need a water softener in Lyndon?
How does Lyndon compare to the USA average?
Data Sources & Methodology
Water quality data for Lyndon is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
Water Hardness
Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.
pH
Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.
TDS — Total Dissolved Solids
Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.
PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances
EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.
Lead
Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.
Appliance Lifespan
Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.