Mayfield Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
groundwater
pH Level
8.4
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
503.7 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 Mayfield, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Mayfield | 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 Mayfield compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Mayfield, Kentucky | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | groundwater |
| Paducah, Kentucky | ≈ 120–179 mg/L | 52.7 ppt | 🟠 Hard | river |
| Murray, Kentucky | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | groundwater |
| Martin, Tennessee | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | groundwater |
| Union City, Tennessee | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | groundwater |
National Benchmark
How Mayfield compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Mayfield | ≈ 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 Mayfield's Water Unique?
Local geology and source profile
Mayfield Electric & Water Systems draws its water supply from the Claiborne aquifer, a significant groundwater source underlying western Kentucky. This aquifer, found within an Eocene sand formation, provides the raw water that is then treated and distributed by the Graves County Water District. The district manages operations for various interconnected systems, including Mayfield, Consumers, Fancy Farm, Hardeman, Hickory, Sedalia, and South Graves. These wells tap into the abundant groundwater reserves, ensuring a consistent supply for the community's needs.
The Claiborne aquifer is geologically characterized by Eocene-age sand deposits. As groundwater percolates through these ancient sands and the associated mineral layers, it naturally dissolves calcium and magnesium. This geological process is the fundamental reason why the water from this aquifer exhibits a hard quality. The mineral-rich nature of the Eocene formations is the primary factor contributing to the water's dissolved mineral content, defining its hardness characteristics for the Mayfield region.
Residents in Mayfield often encounter the effects of hard water, such as scale buildup on plumbing fixtures and potential impacts on the lifespan of appliances like water heaters and dishwashers. You might notice those telltale white mineral deposits on faucets and showerheads. To combat these issues, regular descaling of appliances is a good practice. Many households find that installing a whole-house water softener or a point-of-use system significantly reduces these hardness-related problems, improving soap lathering and appliance efficiency. For specific details on water quality parameters, consulting the annual Consumer Confidence Report from Mayfield Electric & Water Systems or the Graves County Water District is recommended.
Geology & Source: Claiborne aquifer (Eocene sand formation); dissolved calcium and magnesium minerals from sand deposits create hard water
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Frequently Asked Questions
Is Mayfield's water safe to drink?
Do I need a water softener in Mayfield?
How does Mayfield compare to the USA average?
Data Sources & Methodology
Water quality data for Mayfield 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.