What was found in ZIP 25402
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 | 1895 µg/L 19% of the EPA limit 10000 µg/L Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019
Highest in the ZIP: 4750 µg/L — MARTINSBURG CITY OF · 16,250 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 1330 µg/L 13% of the EPA limit 10000 µg/L Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019
Highest in the ZIP: 3769 µg/L — MARTINSBURG CITY OF · 16,250 people · 2019 | 2/2 | SYR4 |
| Fluoride | 1078 µg/L 27% of the EPA limit 4000 µg/L Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019 | 2/2 | SYR4 |
| Copper | 90.95 µg/L 7% of the EPA limit 1300 µg/L Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2017
Highest in the ZIP: 346.75 µg/L — MARTINSBURG CITY OF · 16,250 people · 2018 | 2/2 | SYR4 |
| TTHM | 102.224 µg/L 128% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019 | 2/2 | SYR4 |
| Barium | 42.9 µg/L 2.1% of the EPA limit 2000 µg/L Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019
Highest in the ZIP: 75.525 µg/L — MARTINSBURG CITY OF · 16,250 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 62.652 µg/L 104% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019 | 2/2 | SYR4 |
| Chloroform | 55.5435 µg/L No EPA limit set Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 33.518 µg/L No EPA limit set Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 28.6275 µg/L No EPA limit set Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 26.963 µg/L No EPA limit set Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 22.09 µg/L No EPA limit set Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019 | 2/2 | SYR4 |
| Lead | 16.75 µg/L 112% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2017 | 2/2 | SYR4 |
| Monobromoacetic Acid | 10.11 µg/L No EPA limit set Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 2 µg/L No EPA limit set Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019
Highest in the ZIP: 8.352 µg/L — MARTINSBURG CITY OF · 16,250 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6.06455 pCi/L 40% of the EPA limit 15 pCi/L Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 5.638 µg/L No EPA limit set Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019 | 2/2 | SYR4 |
| Chromium | 1.4 µg/L 1.4% of the EPA limit 100 µg/L Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019
Highest in the ZIP: 5.48 µg/L — MARTINSBURG CITY OF · 16,250 people · 2019 | 2/2 | SYR4 |
| Bromoform | 5.056 µg/L No EPA limit set Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019 | 2/2 | SYR4 |
| Antimony, Total | 4 µg/L 67% of the EPA limit 6 µg/L Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019 | 1/2 | SYR4 |
| Selenium | 3.795 µg/L 7.6% of the EPA limit 50 µg/L Highest in the ZIP: MARTINSBURG CITY OF · 16,250 people · 2019 | 1/2 | SYR4 |
| 2,4-D | 2.8 µg/L 4% of the EPA limit 70 µg/L Highest in the ZIP: MARTINSBURG CITY OF · 16,250 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.9980 µg/L 17% of the EPA limit 6 µg/L Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2019
Highest in the ZIP: 1.21 µg/L — MARTINSBURG CITY OF · 16,250 people · 2019 | 2/2 | SYR4 |
| Arsenic | 1.1 µg/L 11% of the EPA limit 10 µg/L Highest in the ZIP: MARTINSBURG CITY OF · 16,250 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Adipate | 0.9260 µg/L 0.2% of the EPA limit 400 µg/L Highest in the ZIP: MARTINSBURG CITY OF · 16,250 people · 2019 | 1/2 | SYR4 |
| Chlordane | 0.0329 µg/L 1.6% of the EPA limit 2 µg/L Highest in the ZIP: MARTINSBURG CITY OF · 16,250 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: BERKELEY COUNTY PSWD-POTOMAC RIVER · 69,372 people · 2024
Highest in the ZIP: 0.0026 mg/L — MARTINSBURG CITY OF · 16,250 people · 2025 | 2/2 | 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 25402
| Supplier | State | Population served |
|---|---|---|
| BERKELEY COUNTY PSWD-POTOMAC RIVER | 69,372 | |
| MARTINSBURG CITY OF | WV | 16,250 |
Frequently asked questions about ZIP 25402 tap water
Is the tap water in ZIP 25402 safe to drink?
EPA testing detected 27 contaminants across the water suppliers serving ZIP 25402. 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 25402?
2 public water suppliers report EPA drinking-water monitoring for ZIP 25402. Each is listed above with its population served.
What contaminants are in ZIP 25402's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.