Tap WaterIndex

← Louisville, KY

Tap water quality report

ZIP 40150 — Louisville, KY

EPA monitoring across the 2 water suppliers serving ZIP 40150 in Louisville, KY detected 26 contaminants. A detection doesn't automatically mean the water is unsafe — see the highest level found below, with the EPA limit for each.

2
water suppliers
883,323
people served
26
contaminants found

What was found in ZIP 40150

The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
3100 µg/L 31%
of the EPA limit 10000 µg/L
 2/2 SYR4
Nitrate-Nitrite
1600 µg/L 16%
of the EPA limit 10000 µg/L
 1/2 SYR4
Fluoride
1500 µg/L 38%
of the EPA limit 4000 µg/L
 2/2 SYR4
Chlorite
570 µg/L 57%
of the EPA limit 1000 µg/L
 1/2 SYR4
Copper
348 µg/L 27%
of the EPA limit 1300 µg/L
 2/2 SYR4
Total Haloacetic Acids (HAA5)
105 µg/L 175%
of the EPA limit, in the worst sample — 60 µg/L
 2/2 SYR4
TTHM
99 µg/L 124%
of the EPA limit, in the worst sample — 80 µg/L
 2/2 SYR4
Barium
55 µg/L 2.8%
of the EPA limit 2000 µg/L
 1/2 SYR4
Cyanide
30 µg/L 15%
of the EPA limit 200 µg/L
 1/2 SYR4
Lead
27 µg/L 180%
of the EPA limit, in the worst sample — 15 µg/L
 2/2 SYR4
Gross Alpha, Excl. Radon And U
3.4 pCi/L 23%
of the EPA limit 15 pCi/L
 1/2 SYR4
Combined Radium (-226 And -228)
1.7 pCi/L 34%
of the EPA limit 5 pCi/L
 1/2 SYR4
Selenium
1.7 µg/L 3.4%
of the EPA limit 50 µg/L
 1/2 SYR4
Thallium, Total
1 µg/L 50%
of the EPA limit 2 µg/L
 1/2 SYR4
2,4-D
0.3000 µg/L 0.4%
of the EPA limit 70 µg/L
 2/2 SYR4
Arsenic
0.3000 µg/L 3%
of the EPA limit 10 µg/L
 1/2 SYR4
Mercury
0.3000 µg/L 15%
of the EPA limit 2 µg/L
 1/2 SYR4
Atrazine
0.2400 µg/L 8%
of the EPA limit 3 µg/L
 1/2 SYR4
PFOA
0.0075 µg/L
No EPA limit set
 2/2 UCMR-5
Pfpea
0.0074 µg/L
No EPA limit set
 2/2 UCMR-5
Lead
0.0060 mg/L 40%
of the EPA limit 0.0150 mg/L
 2/2 LCR
Pfhxa
0.0053 µg/L
No EPA limit set
 2/2 UCMR-5
PFOS
0.0053 µg/L
No EPA limit set
 1/2 UCMR-5
Pfba
0.0052 µg/L
No EPA limit set
 1/2 UCMR-5
PFBS
0.0052 µg/L
No EPA limit set
 2/2 UCMR-5
PFNA
0.0047 µg/L
No EPA limit set
 1/2 UCMR-5
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.

Water suppliers serving ZIP 40150

SupplierStatePopulation served
LOUISVILLE WATER COMPANY KY 806,997
HARDIN COUNTY WATER DISTRICT #2 KY 76,326

Frequently asked questions about ZIP 40150 tap water

Is the tap water in ZIP 40150 safe to drink?

EPA testing detected 26 contaminants across the water suppliers serving ZIP 40150. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.

Which water suppliers serve ZIP 40150?

2 public water suppliers report EPA drinking-water monitoring for ZIP 40150. Each is listed above with its population served.

What contaminants are in ZIP 40150's water?

EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Chlorite, Copper, and others across this ZIP's suppliers. The full list with levels and sources is above.