What was found in ZIP 57793
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 |
|---|---|---|---|
| Nitrate | 1590 µg/L 16% of the EPA limit 10000 µg/L Main supplier: WHITEWOOD · 879 people · 2019 | 3/5 | SYR4 |
| Fluoride | 700 µg/L 18% of the EPA limit 4000 µg/L Highest in the ZIP: RED WATER DISTRIBUTION LLC · 35 people · 2014 | 2/5 | SYR4 |
| Copper | 235.15 µg/L 18% of the EPA limit 1300 µg/L Main supplier: WHITEWOOD · 879 people · 2018
Highest in the ZIP: 449.5 µg/L — LANTERN ESTATES · 192 people · 2018 | 4/5 | SYR4 |
| Barium | 119 µg/L 5.9% of the EPA limit 2000 µg/L Main supplier: WHITEWOOD · 879 people · 2012
Highest in the ZIP: 120 µg/L — LANTERN ESTATES · 192 people · 2016 | 3/5 | SYR4 |
| TTHM | 4.8495 µg/L 6.1% of the EPA limit 80 µg/L Main supplier: WHITEWOOD · 879 people · 2019
Highest in the ZIP: 12.81 µg/L — WHITEWOOD FOREST ACRES · 160 people · 2019 | 3/5 | SYR4 |
| Lead | 3 µg/L 20% of the EPA limit 15 µg/L Main supplier: WHITEWOOD · 879 people · 2018
Highest in the ZIP: 11.3 µg/L — LANTERN ESTATES · 192 people · 2018 | 4/5 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6.5885 pCi/L 44% of the EPA limit 15 pCi/L Main supplier: WHITEWOOD · 879 people · 2015 | 2/5 | SYR4 |
| Selenium | 6 µg/L 12% of the EPA limit 50 µg/L Highest in the ZIP: RED WATER DISTRIBUTION LLC · 35 people · 2014 | 1/5 | SYR4 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: WHITEWOOD · 879 people · 2024
Highest in the ZIP: 0.0030 mg/L — LANTERN ESTATES · 192 people · 2024 | 5/5 | 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 57793
| Supplier | State | Population served |
|---|---|---|
| WHITEWOOD | SD | 879 |
| RIMROCK WATER COMPANY LLC | WY | 365 |
| LANTERN ESTATES | SD | 192 |
| WHITEWOOD FOREST ACRES | SD | 160 |
| RED WATER DISTRIBUTION LLC | WY | 35 |
Frequently asked questions about ZIP 57793 tap water
Is the tap water in ZIP 57793 safe to drink?
EPA testing detected 9 contaminants across the water suppliers serving ZIP 57793. 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 57793?
5 public water suppliers report EPA drinking-water monitoring for ZIP 57793. Each is listed above with its population served.
What contaminants are in ZIP 57793's water?
EPA monitoring detected Nitrate, Fluoride, Copper, Barium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.