What was found in ZIP 40150
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 1350 µg/L 14% of the EPA limit 10000 µg/L Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2019
Highest in the ZIP: 3100 µg/L — HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 1330 µg/L 13% of the EPA limit 10000 µg/L Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2019 | 1/2 | SYR4 |
| Fluoride | 1000 µg/L 25% of the EPA limit 4000 µg/L Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2019
Highest in the ZIP: 1200 µg/L — HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2019 | 2/2 | SYR4 |
| Chlorite | 501 µg/L 50% of the EPA limit 1000 µg/L Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2019 | 1/2 | SYR4 |
| Copper | 109.5 µg/L 8.4% of the EPA limit 1300 µg/L Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2019
Highest in the ZIP: 172 µg/L — HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2019 | 2/2 | SYR4 |
| TTHM | 38.7 µg/L 48% of the EPA limit 80 µg/L Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2019
Highest in the ZIP: 82.65 µg/L — HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 30.06 µg/L 50% of the EPA limit 60 µg/L Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2019
Highest in the ZIP: 75.65 µg/L — HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2019 | 2/2 | SYR4 |
| Barium | 51.1 µg/L 2.6% of the EPA limit 2000 µg/L Highest in the ZIP: HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2019 | 1/2 | SYR4 |
| Cyanide | 30 µg/L 15% of the EPA limit 200 µg/L Highest in the ZIP: HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2019 | 1/2 | SYR4 |
| Lead | 12.465 µg/L 83% of the EPA limit 15 µg/L Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2017 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.4 pCi/L 23% of the EPA limit 15 pCi/L Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2019 | 1/2 | SYR4 |
| Selenium | 1.7 µg/L 3.4% of the EPA limit 50 µg/L Highest in the ZIP: HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.64 pCi/L 33% of the EPA limit 5 pCi/L Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2019 | 1/2 | SYR4 |
| Thallium, Total | 1 µg/L 50% of the EPA limit 2 µg/L Highest in the ZIP: HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2019 | 1/2 | SYR4 |
| 2,4-D | 0.3000 µg/L 0.4% of the EPA limit 70 µg/L Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2019 | 2/2 | SYR4 |
| Arsenic | 0.3000 µg/L 3% of the EPA limit 10 µg/L Highest in the ZIP: HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2019 | 1/2 | SYR4 |
| Mercury | 0.3000 µg/L 15% of the EPA limit 2 µg/L Highest in the ZIP: HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2019 | 1/2 | SYR4 |
| Atrazine | 0.2400 µg/L 8% of the EPA limit 3 µg/L Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2019 | 1/2 | SYR4 |
| PFOA | 0.0075 µg/L No EPA limit set Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2023 | 2/2 | UCMR-5 |
| Pfpea | 0.0041 µg/L No EPA limit set Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2023
Highest in the ZIP: 0.0074 µg/L — HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2025 | 2/2 | UCMR-5 |
| Lead | 0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2023
Highest in the ZIP: 0.0060 mg/L — HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2024 | 2/2 | LCR |
| Pfhxa | 0.0036 µg/L No EPA limit set Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2023
Highest in the ZIP: 0.0053 µg/L — HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2025 | 2/2 | UCMR-5 |
| PFOS | 0.0053 µg/L No EPA limit set Highest in the ZIP: HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2025 | 1/2 | UCMR-5 |
| Pfba | 0.0052 µg/L No EPA limit set Highest in the ZIP: HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2025 | 1/2 | UCMR-5 |
| PFBS | 0.0030 µg/L No EPA limit set Main supplier: LOUISVILLE WATER COMPANY · 806,997 people · 2023
Highest in the ZIP: 0.0052 µg/L — HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2025 | 2/2 | UCMR-5 |
| PFNA | 0.0047 µg/L No EPA limit set Highest in the ZIP: HARDIN COUNTY WATER DISTRICT #2 · 76,326 people · 2025 | 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 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
Water suppliers serving ZIP 40150
| Supplier | State | Population 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.