What was found in ZIP 58401
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 |
|---|---|---|---|
| Copper | 109 µg/L 8.4% of the EPA limit 1300 µg/L Main supplier: JAMESTOWN CITY OF · 15,427 people · 2017
Highest in the ZIP: 1063 µg/L — STUTSMAN RURAL WATER DISTRICT · 5,550 people · 2017 | 2/2 | SYR4 |
| Nitrate-Nitrite | 1060 µg/L 11% of the EPA limit 10000 µg/L Main supplier: JAMESTOWN CITY OF · 15,427 people · 2019 | 2/2 | SYR4 |
| Fluoride | 752 µg/L 19% of the EPA limit 4000 µg/L Main supplier: JAMESTOWN CITY OF · 15,427 people · 2018 | 2/2 | SYR4 |
| Lithium | 75 µg/L No EPA limit set Main supplier: JAMESTOWN CITY OF · 15,427 people · 2023
Highest in the ZIP: 99.5 µg/L — STUTSMAN RURAL WATER DISTRICT · 5,550 people · 2023 | 2/2 | UCMR-5 |
| Barium | 3.19 µg/L 0.2% of the EPA limit 2000 µg/L Main supplier: JAMESTOWN CITY OF · 15,427 people · 2018
Highest in the ZIP: 19.7 µg/L — STUTSMAN RURAL WATER DISTRICT · 5,550 people · 2018 | 2/2 | SYR4 |
| Lead | 19.58 µg/L 131% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: JAMESTOWN CITY OF · 15,427 people · 2017 | 2/2 | SYR4 |
| Dibromoacetic Acid | 10.82 µg/L No EPA limit set Main supplier: JAMESTOWN CITY OF · 15,427 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 8.6 µg/L 14% of the EPA limit 60 µg/L Main supplier: JAMESTOWN CITY OF · 15,427 people · 2019 | 2/2 | SYR4 |
| Arsenic | 4.88 µg/L 49% of the EPA limit 10 µg/L Main supplier: JAMESTOWN CITY OF · 15,427 people · 2016 | 2/2 | SYR4 |
| Monobromoacetic Acid | 1.78 µg/L No EPA limit set Main supplier: JAMESTOWN CITY OF · 15,427 people · 2019
Highest in the ZIP: 3.82 µg/L — STUTSMAN RURAL WATER DISTRICT · 5,550 people · 2019 | 2/2 | SYR4 |
| TTHM | 1.602 µg/L 2% of the EPA limit 80 µg/L Main supplier: JAMESTOWN CITY OF · 15,427 people · 2019
Highest in the ZIP: 3.371 µg/L — STUTSMAN RURAL WATER DISTRICT · 5,550 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 2.322 µg/L No EPA limit set Main supplier: JAMESTOWN CITY OF · 15,427 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.57 pCi/L 10% of the EPA limit 15 pCi/L Main supplier: JAMESTOWN CITY OF · 15,427 people · 2018 | 1/2 | SYR4 |
| Combined Uranium | 1.54 µg/L 5.1% of the EPA limit 30 µg/L Highest in the ZIP: STUTSMAN RURAL WATER DISTRICT · 5,550 people · 2017 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.6890 pCi/L 14% of the EPA limit 5 pCi/L Main supplier: JAMESTOWN CITY OF · 15,427 people · 2018
Highest in the ZIP: 1.36 pCi/L — STUTSMAN RURAL WATER DISTRICT · 5,550 people · 2017 | 2/2 | SYR4 |
| Bromodichloromethane | 0.8925 µg/L No EPA limit set Main supplier: JAMESTOWN CITY OF · 15,427 people · 2019
Highest in the ZIP: 1.083 µg/L — STUTSMAN RURAL WATER DISTRICT · 5,550 people · 2019 | 2/2 | SYR4 |
| Chloroform | 0.9240 µg/L No EPA limit set Main supplier: JAMESTOWN CITY OF · 15,427 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 0.8425 µg/L No EPA limit set Highest in the ZIP: STUTSMAN RURAL WATER DISTRICT · 5,550 people · 2019 | 1/2 | SYR4 |
| Bromoform | 0.7820 µg/L No EPA limit set Highest in the ZIP: STUTSMAN RURAL WATER DISTRICT · 5,550 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0109 mg/L 73% of the EPA limit 0.0150 mg/L Main supplier: JAMESTOWN CITY OF · 15,427 people · 2023 | 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 58401
| Supplier | State | Population served |
|---|---|---|
| JAMESTOWN CITY OF | ND | 15,427 |
| STUTSMAN RURAL WATER DISTRICT | ND | 5,550 |
Frequently asked questions about ZIP 58401 tap water
Is the tap water in ZIP 58401 safe to drink?
EPA testing detected 20 contaminants across the water suppliers serving ZIP 58401. 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 58401?
2 public water suppliers report EPA drinking-water monitoring for ZIP 58401. Each is listed above with its population served.
What contaminants are in ZIP 58401's water?
EPA monitoring detected Copper, Nitrate-Nitrite, Fluoride, Lithium, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.