What was found in ZIP 58601
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 | 920 µg/L 23% of the EPA limit 4000 µg/L Highest in the ZIP: SOUTHWEST WATER AUTHORITY · 8,537 people · 2016 | 1/2 | SYR4 |
| Copper | 132.6 µg/L 10% of the EPA limit 1300 µg/L Main supplier: DICKINSON CITY OF · 25,679 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 120 µg/L 1.2% of the EPA limit 10000 µg/L Highest in the ZIP: SOUTHWEST WATER AUTHORITY · 8,537 people · 2019 | 1/2 | SYR4 |
| Lithium | 47.2 µg/L No EPA limit set Main supplier: DICKINSON CITY OF · 25,679 people · 2025
Highest in the ZIP: 52.3 µg/L — SOUTHWEST WATER AUTHORITY · 8,537 people · 2025 | 2/2 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 17.4275 µg/L 29% of the EPA limit 60 µg/L Main supplier: DICKINSON CITY OF · 25,679 people · 2019
Highest in the ZIP: 24.3125 µg/L — SOUTHWEST WATER AUTHORITY · 8,537 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 23.652 µg/L No EPA limit set Main supplier: DICKINSON CITY OF · 25,679 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 14.11 µg/L No EPA limit set Main supplier: DICKINSON CITY OF · 25,679 people · 2019
Highest in the ZIP: 20.05 µg/L — SOUTHWEST WATER AUTHORITY · 8,537 people · 2019 | 2/2 | SYR4 |
| Lead | 15.686 µg/L 105% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: DICKINSON CITY OF · 25,679 people · 2019 | 2/2 | SYR4 |
| TTHM | 14.798 µg/L 18% of the EPA limit 80 µg/L Main supplier: DICKINSON CITY OF · 25,679 people · 2019 | 2/2 | SYR4 |
| Barium | 12.6 µg/L 0.6% of the EPA limit 2000 µg/L Highest in the ZIP: SOUTHWEST WATER AUTHORITY · 8,537 people · 2016 | 1/2 | SYR4 |
| Chloroform | 12.574 µg/L No EPA limit set Main supplier: DICKINSON CITY OF · 25,679 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 3.6425 µg/L No EPA limit set Main supplier: DICKINSON CITY OF · 25,679 people · 2019 | 2/2 | SYR4 |
| Bromate | 3 µg/L 30% of the EPA limit 10 µg/L Highest in the ZIP: SOUTHWEST WATER AUTHORITY · 8,537 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 2.3685 µg/L No EPA limit set Main supplier: DICKINSON CITY OF · 25,679 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 1.459 µg/L No EPA limit set Main supplier: DICKINSON CITY OF · 25,679 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 0.3590 pCi/L 2.4% of the EPA limit 15 pCi/L Highest in the ZIP: SOUTHWEST WATER AUTHORITY · 8,537 people · 2018 | 1/2 | SYR4 |
| Pentachlorophenol | 0.0400 µg/L 4% of the EPA limit 1 µg/L Highest in the ZIP: SOUTHWEST WATER AUTHORITY · 8,537 people · 2017 | 1/2 | SYR4 |
| Lead | 0.0053 mg/L 35% of the EPA limit 0.0150 mg/L Main supplier: DICKINSON CITY OF · 25,679 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 58601
| Supplier | State | Population served |
|---|---|---|
| DICKINSON CITY OF | ND | 25,679 |
| SOUTHWEST WATER AUTHORITY | ND | 8,537 |
Frequently asked questions about ZIP 58601 tap water
Is the tap water in ZIP 58601 safe to drink?
EPA testing detected 18 contaminants across the water suppliers serving ZIP 58601. 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 58601?
2 public water suppliers report EPA drinking-water monitoring for ZIP 58601. Each is listed above with its population served.
What contaminants are in ZIP 58601's water?
EPA monitoring detected Fluoride, Copper, Nitrate-Nitrite, Lithium, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.