What was found in ZIP 28540
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 |
|---|---|---|---|
| Fluoride | 2032 µg/L 51% of the EPA limit 4000 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the ZIP: 2211 µg/L — JACKSONVILLE CITY OF · 49,093 people · 2017 | 3/3 | SYR4 |
| Nitrate | 1218.7 µg/L 12% of the EPA limit 10000 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 1/3 | SYR4 |
| Nitrate-Nitrite | 1165.28 µg/L 12% of the EPA limit 10000 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 1/3 | SYR4 |
| Copper | 611.7 µg/L 47% of the EPA limit 1300 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the ZIP: 692.4 µg/L — USMC LEJEUNE--NEW RIVER AIR ST · 11,500 people · 2019 | 3/3 | SYR4 |
| Nitrite | 150.3 µg/L 15% of the EPA limit 1000 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 1/3 | SYR4 |
| Lead | 114.7 µg/L 765% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 3/3 | SYR4 |
| TTHM | 86.95 µg/L 109% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 3/3 | SYR4 |
| Chloroform | 69.725 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 40.15 µg/L 67% of the EPA limit 60 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 3/3 | SYR4 |
| Lithium | 29.5 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2023
Highest in the ZIP: 32.7 µg/L — USMC LEJEUNE--NEW RIVER AIR ST · 11,500 people · 2025 | 3/3 | UCMR-5 |
| Chromium | 28.6 µg/L 29% of the EPA limit 100 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 1/3 | SYR4 |
| Bromodichloromethane | 17 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the ZIP: 24.9685 µg/L — USMC LEJEUNE--NEW RIVER AIR ST · 11,500 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 20.6803 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 18.84 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 3/3 | SYR4 |
| Gross Beta Particle Activity | 9.325 pCi/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2016
Highest in the ZIP: 18.17 pCi/L — JACKSONVILLE CITY OF · 49,093 people · 2019 | 2/3 | SYR4 |
| Dibromochloromethane | 7.5 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the ZIP: 16.22 µg/L — USMC LEJEUNE--NEW RIVER AIR ST · 11,500 people · 2019 | 3/3 | SYR4 |
| Bromoform | 5 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the ZIP: 9.8925 µg/L — JACKSONVILLE CITY OF · 49,093 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 3 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the ZIP: 4.35 µg/L — JACKSONVILLE CITY OF · 49,093 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 2 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the ZIP: 4 µg/L — USMC LEJEUNE--NEW RIVER AIR ST · 11,500 people · 2019 | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.495 pCi/L 23% of the EPA limit 15 pCi/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2016
Highest in the ZIP: 4 pCi/L — JACKSONVILLE CITY OF · 49,093 people · 2019 | 2/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.99 pCi/L 40% of the EPA limit 5 pCi/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the ZIP: 3.39 pCi/L — JACKSONVILLE CITY OF · 49,093 people · 2019 | 2/3 | SYR4 |
| Monobromoacetic Acid | 2 µg/L No EPA limit set Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019
Highest in the ZIP: 2.6 µg/L — USMC LEJEUNE--NEW RIVER AIR ST · 11,500 people · 2019 | 3/3 | SYR4 |
| Combined Uranium | 1.49 µg/L 5% of the EPA limit 30 µg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: ONSLOW WTR AND SEWER AUTHORITY · 156,755 people · 2025
Highest in the ZIP: 0.0040 mg/L — USMC LEJEUNE--NEW RIVER AIR ST · 11,500 people · 2025 | 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 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 28540
| Supplier | State | Population served |
|---|---|---|
| ONSLOW WTR AND SEWER AUTHORITY | NC | 156,755 |
| JACKSONVILLE CITY OF | NC | 49,093 |
| USMC LEJEUNE--NEW RIVER AIR ST | NC | 11,500 |
Frequently asked questions about ZIP 28540 tap water
Is the tap water in ZIP 28540 safe to drink?
EPA testing detected 24 contaminants across the water suppliers serving ZIP 28540. 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 28540?
3 public water suppliers report EPA drinking-water monitoring for ZIP 28540. Each is listed above with its population served.
What contaminants are in ZIP 28540's water?
EPA monitoring detected Fluoride, Nitrate, Nitrate-Nitrite, Copper, Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.