What was found in ZIP 51001
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 |
|---|---|---|---|
| Copper | 350 µg/L 27% of the EPA limit 1300 µg/L | 2/2 | SYR4 |
| Fluoride | 260 µg/L 6.5% of the EPA limit 4000 µg/L | 1/2 | SYR4 |
| Barium | 120 µg/L 6% of the EPA limit 2000 µg/L | 2/2 | SYR4 |
| Lithium | 52.5 µg/L No EPA limit set | 2/2 | UCMR-5 |
| TTHM | 50.2 µg/L 63% of the EPA limit 80 µg/L | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 8.99 µg/L 15% of the EPA limit 60 µg/L | 2/2 | SYR4 |
| Lead | 7 µg/L 47% of the EPA limit 15 µg/L | 2/2 | SYR4 |
| Chloroform | 3.3 µg/L No EPA limit set | 1/2 | SYR4 |
| Bromodichloromethane | 2.86 µg/L No EPA limit set | 1/2 | SYR4 |
| Dichloroacetic Acid | 2.49 µg/L No EPA limit set | 1/2 | SYR4 |
| Monochloroacetic Acid | 2.03 µg/L No EPA limit set | 1/2 | SYR4 |
| Arsenic | 2 µg/L 20% of the EPA limit 10 µg/L | 2/2 | SYR4 |
| Dibromochloromethane | 1.8 µg/L No EPA limit set | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.6 pCi/L 32% of the EPA limit 5 pCi/L | 1/2 | SYR4 |
| Chromium | 1.4 µg/L 1.4% of the EPA limit 100 µg/L | 1/2 | SYR4 |
| Trichloroacetic Acid | 1 µg/L No EPA limit set | 1/2 | SYR4 |
| Selenium | 0.9000 µg/L 1.8% of the EPA limit 50 µg/L | 1/2 | SYR4 |
| Dibromoacetic Acid | 0.7200 µg/L No EPA limit set | 1/2 | SYR4 |
| Lead | 0.0024 mg/L 16% 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 51001
| Supplier | State | Population served |
|---|---|---|
| SOUTHERN SIOUX COUNTY RURAL WATER | IA | 5,420 |
| CLAY RURAL WATER SYSTEM | SD | 4,780 |
Frequently asked questions about ZIP 51001 tap water
Is the tap water in ZIP 51001 safe to drink?
EPA testing detected 19 contaminants across the water suppliers serving ZIP 51001. 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 51001?
2 public water suppliers report EPA drinking-water monitoring for ZIP 51001. Each is listed above with its population served.
What contaminants are in ZIP 51001's water?
EPA monitoring detected Copper, Fluoride, Barium, Lithium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.