What was found in Mayfield's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 3100 µg/L 31% of the EPA limit 10000 µg/L Main supplier: MAYFIELD ELECTRIC & WATER · 12,379 people · 2019
Highest in the city: 6300 µg/L — GRAVES CO WATER DIST - SEDALIA · 371 people · 2019 | 5/7 | SYR4 |
| Nitrate-Nitrite | 3700 µg/L 37% of the EPA limit 10000 µg/L Highest in the city: GRAVES CO WATER DIST - SEDALIA · 371 people · 2014 | 1/7 | SYR4 |
| Fluoride | 900 µg/L 23% of the EPA limit 4000 µg/L Main supplier: MAYFIELD ELECTRIC & WATER · 12,379 people · 2019
Highest in the city: 1420 µg/L — GRAVES CO WATER DIST - SEDALIA · 371 people · 2019 | 5/7 | SYR4 |
| Copper | 21.03 µg/L 1.6% of the EPA limit 1300 µg/L Main supplier: MAYFIELD ELECTRIC & WATER · 12,379 people · 2019
Highest in the city: 268.4 µg/L — GRAVES CO WATER DIST - SEDALIA · 371 people · 2019 | 7/7 | SYR4 |
| Lead | 6.96 µg/L 46% of the EPA limit 15 µg/L Main supplier: MAYFIELD ELECTRIC & WATER · 12,379 people · 2017
Highest in the city: 38.4 µg/L — GRAVES CO WATER DIST - CONSUMERS · 5,016 people · 2017 | 7/7 | SYR4 |
| TTHM | 31.75 µg/L 40% of the EPA limit 80 µg/L Main supplier: MAYFIELD ELECTRIC & WATER · 12,379 people · 2019 | 6/7 | SYR4 |
| Barium | 17.9 µg/L 0.9% of the EPA limit 2000 µg/L Main supplier: MAYFIELD ELECTRIC & WATER · 12,379 people · 2017
Highest in the city: 20.8 µg/L — GRAVES CO WATER DIST - SEDALIA · 371 people · 2017 | 5/7 | SYR4 |
| Cyanide | 20 µg/L 10% of the EPA limit 200 µg/L Highest in the city: GRAVES CO WATER DIST - SOUTH GRAVES · 1,844 people · 2017 | 1/7 | SYR4 |
| Total Haloacetic Acids (HAA5) | 3 µg/L 5% of the EPA limit 60 µg/L Main supplier: MAYFIELD ELECTRIC & WATER · 12,379 people · 2019
Highest in the city: 6.4 µg/L — GRAVES CO WATER DIST - SOUTH GRAVES · 1,844 people · 2019 | 6/7 | SYR4 |
| Chromium | 3.4 µg/L 3.4% of the EPA limit 100 µg/L Highest in the city: GRAVES CO WATER DIST - FANCY FARM · 1,301 people · 2017 | 3/7 | SYR4 |
| Tetrachloroethylene | 3.25 µg/L 65% of the EPA limit 5 µg/L Main supplier: MAYFIELD ELECTRIC & WATER · 12,379 people · 2019 | 1/7 | SYR4 |
| Combined Radium (-226 And -228) | 2.83 pCi/L 57% of the EPA limit 5 pCi/L Main supplier: MAYFIELD ELECTRIC & WATER · 12,379 people · 2017 | 5/7 | SYR4 |
| Selenium | 1.9 µg/L 3.8% of the EPA limit 50 µg/L Main supplier: MAYFIELD ELECTRIC & WATER · 12,379 people · 2017 | 1/7 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.54 pCi/L 10% of the EPA limit 15 pCi/L Highest in the city: GRAVES CO WATER DIST - SEDALIA · 371 people · 2014 | 1/7 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1 µg/L 17% of the EPA limit 6 µg/L Highest in the city: GRAVES CO WATER DIST - SOUTH GRAVES · 1,844 people · 2017 | 1/7 | SYR4 |
| Picloram | 0.3000 µg/L 0.1% of the EPA limit 500 µg/L Highest in the city: GRAVES CO WATER DIST - SEDALIA · 371 people · 2019 | 1/7 | SYR4 |
| Atrazine | 0.2800 µg/L 9.3% of the EPA limit 3 µg/L Highest in the city: GRAVES CO WATER DIST - SEDALIA · 371 people · 2019 | 1/7 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: MAYFIELD ELECTRIC & WATER · 12,379 people · 2023
Highest in the city: 0.0060 mg/L — GRAVES CO WATER DIST - SEDALIA · 371 people · 2023 | 7/7 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Mayfield
| Supplier | Population served |
|---|---|
| MAYFIELD ELECTRIC & WATER | 12,379 |
| GRAVES CO WATER DIST - CONSUMERS | 5,016 |
| GRAVES CO WATER DIST - HICKORY | 4,069 |
| GRAVES CO WATER DIST - SOUTH GRAVES | 1,844 |
| GRAVES CO WATER DIST - FANCY FARM | 1,301 |
| GRAVES CO WATER DIST - HARDEMAN | 1,006 |
| GRAVES CO WATER DIST - SEDALIA | 371 |
Frequently asked questions about Mayfield tap water
Is Mayfield tap water safe to drink?
EPA testing detected 18 contaminants in the water serving Mayfield. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Mayfield?
7 public water suppliers report drinking-water monitoring for Mayfield, Kentucky to the EPA. Each is listed above with its population served.
What contaminants are in Mayfield's water?
The contaminants EPA monitoring detected in Mayfield include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Lead. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.