What was found in ZIP 27504
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 | 1100 µg/L 11% of the EPA limit 10000 µg/L Highest in the ZIP: DUNN, CITY OF · 12,442 people · 2019 | 1/4 | SYR4 |
| Nitrate-Nitrite | 1100 µg/L 11% of the EPA limit 10000 µg/L Highest in the ZIP: DUNN, CITY OF · 12,442 people · 2019 | 1/4 | SYR4 |
| Fluoride | 586.5 µg/L 15% of the EPA limit 4000 µg/L Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
Highest in the ZIP: 722 µg/L — DUNN, CITY OF · 12,442 people · 2019 | 3/4 | SYR4 |
| Copper | 144 µg/L 11% of the EPA limit 1300 µg/L Main supplier: JOHNSTON CO-WEST · 99,027 people · 2018
Highest in the ZIP: 435 µg/L — JOHNSTON CO-EAST · 25,212 people · 2017 | 4/4 | SYR4 |
| Cyanide | 177.5 µg/L 89% of the EPA limit 200 µg/L Highest in the ZIP: DUNN, CITY OF · 12,442 people · 2019 | 1/4 | SYR4 |
| TTHM | 75 µg/L 94% of the EPA limit 80 µg/L Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
Highest in the ZIP: 84 µg/L — JOHNSTON CO-EAST · 25,212 people · 2019 | 4/4 | SYR4 |
| Chloroform | 48.55 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
Highest in the ZIP: 68.4 µg/L — JOHNSTON CO-EAST · 25,212 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 65.1 µg/L 109% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 25.55 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
Highest in the ZIP: 30.15 µg/L — DUNN, CITY OF · 12,442 people · 2019 | 4/4 | SYR4 |
| Bromoform | 27.75 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019 | 4/4 | SYR4 |
| Bromodichloromethane | 16 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
Highest in the ZIP: 27.1 µg/L — DUNN, CITY OF · 12,442 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 21.3 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
Highest in the ZIP: 25.665 µg/L — BENSON, TOWN OF · 4,802 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 20.05 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
Highest in the ZIP: 23.15 µg/L — JOHNSTON CO-EAST · 25,212 people · 2019 | 4/4 | SYR4 |
| Lead | 5.9 µg/L 39% of the EPA limit 15 µg/L Main supplier: JOHNSTON CO-WEST · 99,027 people · 2018
Highest in the ZIP: 23 µg/L — JOHNSTON CO-EAST · 25,212 people · 2017 | 4/4 | SYR4 |
| Monobromoacetic Acid | 13.5 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019 | 3/4 | SYR4 |
| Monochloroacetic Acid | 13.35 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019 | 4/4 | SYR4 |
| Dibromoacetic Acid | 11 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019 | 4/4 | SYR4 |
| Gross Beta Particle Activity | 6.015 pCi/L No EPA limit set Highest in the ZIP: DUNN, CITY OF · 12,442 people · 2018 | 1/4 | SYR4 |
| Mercury | 1 µg/L 50% of the EPA limit 2 µg/L Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019 | 1/4 | SYR4 |
| Toluene | 0.8000 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019 | 1/4 | SYR4 |
| Atrazine | 0.1780 µg/L 5.9% of the EPA limit 3 µg/L Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
Highest in the ZIP: 0.4120 µg/L — DUNN, CITY OF · 12,442 people · 2019 | 3/4 | SYR4 |
| Simazine | 0.4050 µg/L 10% of the EPA limit 4 µg/L Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019 | 3/4 | SYR4 |
| Pfpea | 0.0092 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025
Highest in the ZIP: 0.0224 µg/L — DUNN, CITY OF · 12,442 people · 2024 | 4/4 | UCMR-5 |
| Pfhxa | 0.0092 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025
Highest in the ZIP: 0.0204 µg/L — DUNN, CITY OF · 12,442 people · 2024 | 4/4 | UCMR-5 |
| Pfba | 0.0156 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025 | 4/4 | UCMR-5 |
| PFOS | 0.0141 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025
Highest in the ZIP: 0.0150 µg/L — BENSON, TOWN OF · 4,802 people · 2024 | 4/4 | UCMR-5 |
| PFBS | 0.0045 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025
Highest in the ZIP: 0.0142 µg/L — DUNN, CITY OF · 12,442 people · 2024 | 4/4 | UCMR-5 |
| PFOA | 0.0076 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025
Highest in the ZIP: 0.0120 µg/L — DUNN, CITY OF · 12,442 people · 2024 | 4/4 | UCMR-5 |
| Pfhpa | 0.0050 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025
Highest in the ZIP: 0.0076 µg/L — DUNN, CITY OF · 12,442 people · 2024 | 4/4 | UCMR-5 |
| PFHXS | 0.0053 µg/L No EPA limit set Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025 | 4/4 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: JOHNSTON CO-WEST · 99,027 people · 2024 | 4/4 | 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 27504
| Supplier | State | Population served |
|---|---|---|
| JOHNSTON CO-WEST | NC | 99,027 |
| JOHNSTON CO-EAST | NC | 25,212 |
| DUNN, CITY OF | NC | 12,442 |
| BENSON, TOWN OF | NC | 4,802 |
Frequently asked questions about ZIP 27504 tap water
Is the tap water in ZIP 27504 safe to drink?
EPA testing detected 31 contaminants across the water suppliers serving ZIP 27504. 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 27504?
4 public water suppliers report EPA drinking-water monitoring for ZIP 27504. Each is listed above with its population served.
What contaminants are in ZIP 27504's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, Cyanide, and others across this ZIP's suppliers. The full list with levels and sources is above.