What was found in ZIP 58316
The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 2130 µg/L 53% of the EPA limit 4000 µg/L | 1/1 | SYR4 |
| Copper | 1770 µg/L 136% of the EPA limit, in the worst sample — 1300 µg/L | 1/1 | SYR4 |
| Nitrate-Nitrite | 1060 µg/L 11% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| TTHM | 113.9 µg/L 142% of the EPA limit, in the worst sample — 80 µg/L | 1/1 | SYR4 |
| Lithium | 89.4 µg/L No EPA limit set | 1/1 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 78.11 µg/L 130% of the EPA limit, in the worst sample — 60 µg/L | 1/1 | SYR4 |
| Barium | 37.9 µg/L 1.9% of the EPA limit 2000 µg/L | 1/1 | SYR4 |
| Lead | 16.4 µg/L 109% of the EPA limit, in the worst sample — 15 µg/L | 1/1 | SYR4 |
| Cyanide | 10 µg/L 5% of the EPA limit 200 µg/L | 1/1 | SYR4 |
| Combined Uranium | 4.023 µg/L 13% of the EPA limit 30 µg/L | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.9 pCi/L 19% of the EPA limit 15 pCi/L | 1/1 | SYR4 |
| Chromium | 1.36 µg/L 1.4% of the EPA limit 100 µg/L | 1/1 | SYR4 |
| Arsenic | 1.23 µg/L 12% of the EPA limit 10 µg/L | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 1.13 pCi/L 23% of the EPA limit 5 pCi/L | 1/1 | SYR4 |
| Selenium | 1 µg/L 2% of the EPA limit 50 µg/L | 1/1 | SYR4 |
| Lead | 0.0017 mg/L 11% of the EPA limit 0.0150 mg/L | 1/1 | 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 single worst sample on
record — over 100% is worth reading, but is not by itself a violation.
Formal violations are listed separately.
Water suppliers serving ZIP 58316
| Supplier | State | Population served |
|---|---|---|
| BELCOURT-TURTLE MTN RURAL WATER SYSTEM | ND | 13,500 |
Frequently asked questions about ZIP 58316 tap water
Is the tap water in ZIP 58316 safe to drink?
EPA testing detected 16 contaminants across the water suppliers serving ZIP 58316. 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 58316?
1 public water supplier report EPA drinking-water monitoring for ZIP 58316. Each is listed above with its population served.
What contaminants are in ZIP 58316's water?
EPA monitoring detected Fluoride, Copper, Nitrate-Nitrite, TTHM, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.