What was found in ZIP 40023
The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 1600 µg/L 16% of the EPA limit 10000 µg/L | 1/3 | SYR4 |
| Nitrate-Nitrite | 1600 µg/L 16% of the EPA limit 10000 µg/L | 1/3 | SYR4 |
| Fluoride | 1000 µg/L 25% of the EPA limit 4000 µg/L | 1/3 | SYR4 |
| Chlorite | 570 µg/L 57% of the EPA limit 1000 µg/L | 1/3 | SYR4 |
| Copper | 496 µg/L 38% of the EPA limit 1300 µg/L | 3/3 | SYR4 |
| TTHM | 97.6 µg/L 122% of the EPA limit, in the worst sample — 80 µg/L | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 89.6 µg/L 149% of the EPA limit, in the worst sample — 60 µg/L | 3/3 | SYR4 |
| Lead | 43 µg/L 287% of the EPA limit, in the worst sample — 15 µg/L | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.4 pCi/L 23% of the EPA limit 15 pCi/L | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.7 pCi/L 34% of the EPA limit 5 pCi/L | 1/3 | SYR4 |
| 2,4-D | 0.3000 µg/L 0.4% of the EPA limit 70 µg/L | 1/3 | SYR4 |
| Atrazine | 0.2400 µg/L 8% of the EPA limit 3 µg/L | 1/3 | SYR4 |
| PFOA | 0.0075 µg/L No EPA limit set | 3/3 | UCMR-5 |
| Pfpea | 0.0049 µg/L No EPA limit set | 2/3 | UCMR-5 |
| Pfhxa | 0.0036 µg/L No EPA limit set | 1/3 | UCMR-5 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L | 3/3 | LCR |
| PFBS | 0.0030 µg/L No EPA limit set | 1/3 | 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 40023
| Supplier | State | Population served |
|---|---|---|
| LOUISVILLE WATER COMPANY | KY | 806,997 |
| TAYLORSVILLE WATER WORKS | KY | 22,286 |
| WEST SHELBY WATER DISTRICT | KY | 6,994 |
Frequently asked questions about ZIP 40023 tap water
Is the tap water in ZIP 40023 safe to drink?
EPA testing detected 17 contaminants across the water suppliers serving ZIP 40023. 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 40023?
3 public water suppliers report EPA drinking-water monitoring for ZIP 40023. Each is listed above with its population served.
What contaminants are in ZIP 40023'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.