What was found in ZIP 57747
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 | 856 µg/L 8.6% of the EPA limit 10000 µg/L Main supplier: HOT SPRINGS · 3,395 people · 2019
Highest in the ZIP: 1350 µg/L — HOT SPRINGS VA CENTER · 445 people · 2019 | 9/9 | SYR4 |
| Fluoride | 1000 µg/L 25% of the EPA limit 4000 µg/L Highest in the ZIP: GREEN ACRES WATER CORPORATION · 31 people · 2013 | 8/9 | SYR4 |
| Copper | 167.2999999999997 µg/L 13% of the EPA limit 1300 µg/L Main supplier: HOT SPRINGS · 3,395 people · 2017
Highest in the ZIP: 620.0999999999998 µg/L — RUSHMORE RANCH ESTATES · 168 people · 2019 | 9/9 | SYR4 |
| Lithium | 122 µg/L No EPA limit set Main supplier: HOT SPRINGS · 3,395 people · 2025 | 1/9 | UCMR-5 |
| Barium | 117 µg/L 5.9% of the EPA limit 2000 µg/L Highest in the ZIP: SOUTHERN BLACK HILLS WATER · 947 people · 2017 | 5/9 | SYR4 |
| TTHM | 3.525 µg/L 4.4% of the EPA limit 80 µg/L Main supplier: HOT SPRINGS · 3,395 people · 2019
Highest in the ZIP: 42.269999999999996 µg/L — RUSHMORE RANCH ESTATES · 168 people · 2019 | 7/9 | SYR4 |
| Combined Uranium | 16.7 µg/L 56% of the EPA limit 30 µg/L Highest in the ZIP: SPRING CREEK ACRES · 172 people · 2019 | 2/9 | SYR4 |
| Arsenic | 9 µg/L 90% of the EPA limit 10 µg/L Highest in the ZIP: RUSHMORE RANCH ESTATES · 168 people · 2019 | 5/9 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.297 pCi/L 29% of the EPA limit 15 pCi/L Main supplier: HOT SPRINGS · 3,395 people · 2017
Highest in the ZIP: 7.38 pCi/L — PARAMOUNT POINT · 40 people · 2019 | 9/9 | SYR4 |
| Lead | 4.099999999999994 µg/L 27% of the EPA limit 15 µg/L Main supplier: HOT SPRINGS · 3,395 people · 2017
Highest in the ZIP: 7 µg/L — HOT SPRINGS VA CENTER · 445 people · 2019 | 9/9 | SYR4 |
| Selenium | 7 µg/L 14% of the EPA limit 50 µg/L Highest in the ZIP: SPRING CREEK ACRES · 172 people · 2013 | 3/9 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.867 µg/L 3.1% of the EPA limit 60 µg/L Main supplier: HOT SPRINGS · 3,395 people · 2019
Highest in the ZIP: 4.869999999999999 µg/L — COUNTRY CLUB ESTATES · 83 people · 2018 | 4/9 | SYR4 |
| Chromium | 1 µg/L 1% of the EPA limit 100 µg/L Highest in the ZIP: LIBERTY HILLS COMMUNITY · 68 people · 2012 | 1/9 | SYR4 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L Main supplier: HOT SPRINGS · 3,395 people · 2023
Highest in the ZIP: 0.0040 mg/L — HOT SPRINGS VA CENTER · 445 people · 2025 | 9/9 | 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 57747
| Supplier | State | Population served |
|---|---|---|
| HOT SPRINGS | SD | 3,395 |
| SOUTHERN BLACK HILLS WATER | SD | 947 |
| HOT SPRINGS VA CENTER | SD | 445 |
| SPRING CREEK ACRES | SD | 172 |
| RUSHMORE RANCH ESTATES | SD | 168 |
| COUNTRY CLUB ESTATES | SD | 83 |
| LIBERTY HILLS COMMUNITY | SD | 68 |
| PARAMOUNT POINT | SD | 40 |
| GREEN ACRES WATER CORPORATION | SD | 31 |
Frequently asked questions about ZIP 57747 tap water
Is the tap water in ZIP 57747 safe to drink?
EPA testing detected 14 contaminants across the water suppliers serving ZIP 57747. 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 57747?
9 public water suppliers report EPA drinking-water monitoring for ZIP 57747. Each is listed above with its population served.
What contaminants are in ZIP 57747's water?
EPA monitoring detected Nitrate, Fluoride, Copper, Lithium, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.