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Tap water quality report

Williamsburg, KY

EPA monitoring detected 17 contaminants across the 3 water suppliers serving Williamsburg. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

3
water suppliers
15,700
people served
17
contaminants found
Kentucky rankings Lead in Kentucky PFAS in Kentucky

What was found in Williamsburg's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
1120 µg/L 28%
of the EPA limit 4000 µg/L
 1/3 SYR4
Copper
520 µg/L 40%
of the EPA limit 1300 µg/L
 3/3 SYR4
Nitrate
410 µg/L 4.1%
of the EPA limit 10000 µg/L
 1/3 SYR4
Nitrate-Nitrite
410 µg/L 4.1%
of the EPA limit 10000 µg/L
 1/3 SYR4
TTHM
135.5 µg/L 169%
of the EPA limit, in the worst sample — 80 µg/L
 3/3 SYR4
Total Haloacetic Acids (HAA5)
114.7 µg/L 191%
of the EPA limit, in the worst sample — 60 µg/L
 3/3 SYR4
Barium
31 µg/L 1.6%
of the EPA limit 2000 µg/L
 1/3 SYR4
Lead
7 µg/L 47%
of the EPA limit 15 µg/L
 3/3 SYR4
Combined Radium (-226 And -228)
1.5 pCi/L 30%
of the EPA limit 5 pCi/L
 1/3 SYR4
Selenium
1 µg/L 2%
of the EPA limit 50 µg/L
 1/3 SYR4
Pfhxa
0.0200 µg/L
No EPA limit set
 1/3 UCMR-5
Pfpea
0.0120 µg/L
No EPA limit set
 1/3 UCMR-5
PFOA
0.0100 µg/L
No EPA limit set
 1/3 UCMR-5
Pfba
0.0073 µg/L
No EPA limit set
 1/3 UCMR-5
PFOS
0.0046 µg/L
No EPA limit set
 1/3 UCMR-5
PFBS
0.0041 µg/L
No EPA limit set
 1/3 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 3/3 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 single worst sample on record — 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 Williamsburg

SupplierPopulation served
WHITLEY CO WATER DISTRICT 9,825
WILLIAMSBURG WATER DEPARTMENT 5,554
WHITLEY CO. WATER DISTRICT 92 WEST 321

Frequently asked questions about Williamsburg tap water

Is Williamsburg tap water safe to drink?

EPA testing detected 17 contaminants in the water serving Williamsburg. 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 Williamsburg?

3 public water suppliers report drinking-water monitoring for Williamsburg, Kentucky to the EPA. Each is listed above with its population served.

What contaminants are in Williamsburg's water?

The contaminants EPA monitoring detected in Williamsburg include Fluoride, Copper, Nitrate, Nitrate-Nitrite, TTHM. The full list, with the highest level found 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.