What was found in ZIP 58554
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 | 740 µg/L 19% of the EPA limit 4000 µg/L | 1/2 | SYR4 |
| Nitrate-Nitrite | 140 µg/L 1.4% of the EPA limit 10000 µg/L | 1/2 | SYR4 |
| Copper | 119 µg/L 9.2% of the EPA limit 1300 µg/L | 2/2 | SYR4 |
| TTHM | 75.72 µg/L 95% of the EPA limit 80 µg/L | 2/2 | SYR4 |
| Chloroform | 54.54 µg/L No EPA limit set | 2/2 | SYR4 |
| Lithium | 45.5 µg/L No EPA limit set | 2/2 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 34.12 µg/L 57% of the EPA limit 60 µg/L | 2/2 | SYR4 |
| Dichloroacetic Acid | 25.7 µg/L No EPA limit set | 2/2 | SYR4 |
| Bromodichloromethane | 17.23 µg/L No EPA limit set | 2/2 | SYR4 |
| Barium | 11.1 µg/L 0.6% of the EPA limit 2000 µg/L | 1/2 | SYR4 |
| Lead | 10.7 µg/L 71% of the EPA limit 15 µg/L | 2/2 | SYR4 |
| Trichloroacetic Acid | 7.54 µg/L No EPA limit set | 2/2 | SYR4 |
| Dibromochloromethane | 5.18 µg/L No EPA limit set | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.91 pCi/L 19% of the EPA limit 15 pCi/L | 1/2 | SYR4 |
| Dibromoacetic Acid | 2.9 µg/L No EPA limit set | 2/2 | SYR4 |
| Monochloroacetic Acid | 2.71 µg/L No EPA limit set | 2/2 | SYR4 |
| Combined Uranium | 1.27 µg/L 4.2% of the EPA limit 30 µg/L | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.0696 pCi/L 1.4% of the EPA limit 5 pCi/L | 1/2 | SYR4 |
| Lead | 0.0062 mg/L 41% of the EPA limit 0.0150 mg/L | 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 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 58554
| Supplier | State | Population served |
|---|---|---|
| MANDAN CITY OF | ND | 21,769 |
| MISSOURI WEST WATER SYSTEM | ND | 4,303 |
Frequently asked questions about ZIP 58554 tap water
Is the tap water in ZIP 58554 safe to drink?
EPA testing detected 19 contaminants across the water suppliers serving ZIP 58554. 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 58554?
2 public water suppliers report EPA drinking-water monitoring for ZIP 58554. Each is listed above with its population served.
What contaminants are in ZIP 58554's water?
EPA monitoring detected Fluoride, Nitrate-Nitrite, Copper, TTHM, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.