What was found in ZIP 57579
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 | 452.5 µg/L 35% of the EPA limit 1300 µg/L Main supplier: SICANGU MNI WICONI RURAL WATER SYSTEM · 5,610 people · 2018 | 2/2 | SYR4 |
| Lithium | 69.6 µg/L No EPA limit set Main supplier: SICANGU MNI WICONI RURAL WATER SYSTEM · 5,610 people · 2023 | 1/2 | UCMR-5 |
| TTHM | 47.2 µg/L 59% of the EPA limit 80 µg/L Main supplier: SICANGU MNI WICONI RURAL WATER SYSTEM · 5,610 people · 2019
Highest in the ZIP: 47.82 µg/L — WHITE RIVER · 533 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 32.86 µg/L 55% of the EPA limit 60 µg/L Main supplier: SICANGU MNI WICONI RURAL WATER SYSTEM · 5,610 people · 2019 | 2/2 | SYR4 |
| Lead | 3.92 µg/L 26% of the EPA limit 15 µg/L Main supplier: SICANGU MNI WICONI RURAL WATER SYSTEM · 5,610 people · 2018
Highest in the ZIP: 6.515 µg/L — WHITE RIVER · 533 people · 2018 | 2/2 | SYR4 |
| Lead | 0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L Main supplier: SICANGU MNI WICONI RURAL WATER SYSTEM · 5,610 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 57579
| Supplier | State | Population served |
|---|---|---|
| SICANGU MNI WICONI RURAL WATER SYSTEM | SD | 5,610 |
| WHITE RIVER | SD | 533 |
Frequently asked questions about ZIP 57579 tap water
Is the tap water in ZIP 57579 safe to drink?
EPA testing detected 6 contaminants across the water suppliers serving ZIP 57579. 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 57579?
2 public water suppliers report EPA drinking-water monitoring for ZIP 57579. Each is listed above with its population served.
What contaminants are in ZIP 57579's water?
EPA monitoring detected Copper, Lithium, TTHM, Total Haloacetic Acids (HAA5), Lead, and others across this ZIP's suppliers. The full list with levels and sources is above.