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Tap water quality report

London, KY

EPA monitoring detected 15 contaminants across the 5 water suppliers serving London. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

5
water suppliers
71,586
people served
15
contaminants found
Kentucky rankings Lead in Kentucky PFAS in Kentucky

What was found in London'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
Copper
1840 µg/L 142%
of the EPA limit, in the worst sample — 1300 µg/L
 5/5 SYR4
Fluoride
1600 µg/L 40%
of the EPA limit 4000 µg/L
 3/5 SYR4
Nitrate
450 µg/L 4.5%
of the EPA limit 10000 µg/L
 3/5 SYR4
Nitrate-Nitrite
450 µg/L 4.5%
of the EPA limit 10000 µg/L
 1/5 SYR4
Lead
260 µg/L 1733%
of the EPA limit, in the worst sample — 15 µg/L
 5/5 SYR4
TTHM
108 µg/L 135%
of the EPA limit, in the worst sample — 80 µg/L
 5/5 SYR4
Total Haloacetic Acids (HAA5)
79 µg/L 132%
of the EPA limit, in the worst sample — 60 µg/L
 5/5 SYR4
Cyanide
30 µg/L 15%
of the EPA limit 200 µg/L
 2/5 SYR4
Barium
22 µg/L 1.1%
of the EPA limit 2000 µg/L
 3/5 SYR4
Combined Radium (-226 And -228)
4.3 pCi/L 86%
of the EPA limit 5 pCi/L
 3/5 SYR4
Arsenic
2.9 µg/L 29%
of the EPA limit 10 µg/L
 1/5 SYR4
Thallium, Total
0.1000 µg/L 5%
of the EPA limit 2 µg/L
 1/5 SYR4
Pfba
0.0068 µg/L
No EPA limit set
 2/5 UCMR-5
Pfhxa
0.0039 µg/L
No EPA limit set
 2/5 UCMR-5
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 5/5 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 London

SupplierPopulation served
LAUREL CO WATER DISTRICT #2 16,899
EAST LAUREL WATER DISTRICT 16,062
WOOD CREEK WATER DISTRICT 14,892
WEST LAUREL WATER ASSOC INC 14,878
LONDON UTILITY COMMISSION 8,855

Frequently asked questions about London tap water

Is London tap water safe to drink?

EPA testing detected 15 contaminants in the water serving London. 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 London?

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

What contaminants are in London's water?

The contaminants EPA monitoring detected in London include Copper, Fluoride, Nitrate, Nitrate-Nitrite, Lead. 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.