Mayfield Water Hardness & Quality Report (2026)
Water Hardness
12.2 grains per gallon
Source
river
pH Level
8.4
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
503.7 mg/L
Est. Daily Cost
$0.56
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 Mayfield, your appliances are currently losing 28% efficiency due to mineral buildup.
| Appliance | In Mayfield | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 2.7 yrs | 8.5 yrs | -68% |
| Washing Machine | 5.8 yrs | 12 yrs | -52% |
| Water Heater | 7.2 yrs | 15 yrs | -52% |
Regional Water Comparison
How Mayfield compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Mayfield, Kentucky | 209.5 mg/L | 6.4 ppt | 🔴 Very Hard | river |
| Paducah, Kentucky | 117.5 mg/L | 4.3 ppt | 🟡 Moderately Hard | river |
| Murray, Kentucky | 157.5 mg/L | 5.2 ppt | 🟠 Hard | river |
| Martin, Tennessee | 138.5 mg/L | 4.7 ppt | 🟠 Hard | reservoir |
| Union City, Tennessee | 212 mg/L | 7.2 ppt | 🔴 Very Hard | reservoir |
National Benchmark
How Mayfield compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Mayfield | 209.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Mayfield's Water Unique?
Local geology and source profile
Mayfield, Kentucky, in Graves County — the Graves County seat adjacent to Paducah and Fulton in the west Kentucky Purchase Plain — receives its water from the City of Mayfield Water Department, drawing from the Mayfield Creek reservoir through the west Kentucky distribution.
The very hard 209.5 mg/L hardness and TDS of 503.7 mg/L reflect the Graves County supply's very hard west Kentucky Purchase Plain character — the Cretaceous McNairy Formation and Paleocene Midway Group are calcareous formations in the west Kentucky Mississippi Embayment; Mayfield Creek drains through the calcareous Gulf Coastal Plain formations of the Purchase Plain, producing very hard water throughout the Graves County area (compare Paducah KY: 205/493 in McCracken County comparable; Fulton KY: 213/514 in Fulton County comparable; Mayfield consistent very hard from the same Graves County Mayfield Creek Cretaceous calcareous supply). The Mayfield Creek watershed — Cretaceous McNairy Formation (calcareous — primary hardness contributor), Paleocene Midway Group (calcareous — secondary contributor), and Quaternary Purchase Plain alluvium (calcareous — TDS contributor).
At 209.5 mg/L with TDS 504, Mayfield's water is very hard — a water softener is strongly recommended to protect plumbing and appliances. The PFAS level of 6.4 ppt warrants a certified drinking water filter. Review the City of Mayfield's annual water quality report.
Geology & Source: Mayfield in Graves County draws from the Mayfield Water on the Tennessee River/Mayfield Creek supply (Graves County, west Kentucky) — the west Kentucky Purchase Plain at Graves County draws from Cretaceous McNairy Formation (calcareous) and Paleocene Midway Group (calcareous) — Kentucky Graves County Mayfield Creek Cretaceous calcareous supply produces very hard water at 209.5 mg/L with TDS 503.7 mg/L.