What was found in ZIP 57717
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 | 784 µg/L 7.8% of the EPA limit 10000 µg/L Main supplier: BELLE FOURCHE · 5,617 people · 2018
Highest in the ZIP: 4470 µg/L — WHISPERING PINES WATER ASSOCIATION · 48 people · 2019 | 4/7 | SYR4 |
| Fluoride | 700 µg/L 18% of the EPA limit 4000 µg/L Highest in the ZIP: RED WATER DISTRIBUTION LLC · 35 people · 2014 | 3/7 | SYR4 |
| Copper | 194.6 µg/L 15% of the EPA limit 1300 µg/L Main supplier: BELLE FOURCHE · 5,617 people · 2018
Highest in the ZIP: 386.8 µg/L — RIMROCK WATER COMPANY LLC · 365 people · 2019 | 5/7 | SYR4 |
| Barium | 193 µg/L 9.7% of the EPA limit 2000 µg/L Main supplier: BELLE FOURCHE · 5,617 people · 2018
Highest in the ZIP: 280 µg/L — WHISPERING PINES WATER ASSOCIATION · 48 people · 2017 | 4/7 | SYR4 |
| Lead | 6.05 µg/L 40% of the EPA limit 15 µg/L Main supplier: BELLE FOURCHE · 5,617 people · 2018
Highest in the ZIP: 15.36 µg/L — HAY CREEK WATER COMPANY · 323 people · 2019 | 5/7 | SYR4 |
| TTHM | 7.963 µg/L 10% of the EPA limit 80 µg/L Main supplier: BELLE FOURCHE · 5,617 people · 2019 | 2/7 | SYR4 |
| Selenium | 6 µg/L 12% of the EPA limit 50 µg/L Highest in the ZIP: RED WATER DISTRIBUTION LLC · 35 people · 2014 | 1/7 | SYR4 |
| Gross Alpha, Excl. Radon And U | 5.63 pCi/L 38% of the EPA limit 15 pCi/L Highest in the ZIP: RED WATER DISTRIBUTION LLC · 35 people · 2016 | 2/7 | SYR4 |
| Arsenic | 5 µg/L 50% of the EPA limit 10 µg/L Main supplier: BELLE FOURCHE · 5,617 people · 2018 | 2/7 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.03 µg/L 1.7% of the EPA limit 60 µg/L Highest in the ZIP: HAY CREEK WATER COMPANY · 323 people · 2019 | 1/7 | SYR4 |
| Chromium | 1 µg/L 1% of the EPA limit 100 µg/L Highest in the ZIP: BLACK HILLS WATER DISTRIBUTION, LLC · 135 people · 2013 | 1/7 | SYR4 |
| Mercury | 0.2000 µg/L 10% of the EPA limit 2 µg/L Highest in the ZIP: BLACK HILLS WATER DISTRIBUTION, LLC · 135 people · 2013 | 1/7 | SYR4 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L Main supplier: BELLE FOURCHE · 5,617 people · 2023 | 7/7 | 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 57717
| Supplier | State | Population served |
|---|---|---|
| BELLE FOURCHE | SD | 5,617 |
| RIMROCK WATER COMPANY LLC | WY | 365 |
| HAY CREEK WATER COMPANY | SD | 323 |
| BLACK HILLS WATER DISTRIBUTION, LLC | SD | 135 |
| FRUITDALE | SD | 75 |
| WHISPERING PINES WATER ASSOCIATION | SD | 48 |
| RED WATER DISTRIBUTION LLC | WY | 35 |
Frequently asked questions about ZIP 57717 tap water
Is the tap water in ZIP 57717 safe to drink?
EPA testing detected 13 contaminants across the water suppliers serving ZIP 57717. 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 57717?
7 public water suppliers report EPA drinking-water monitoring for ZIP 57717. Each is listed above with its population served.
What contaminants are in ZIP 57717's water?
EPA monitoring detected Nitrate, Fluoride, Copper, Barium, Lead, and others across this ZIP's suppliers. The full list with levels and sources is above.