What was found in Hot Springs's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every 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 city: 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 city: 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 city: 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 city: 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 city: 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 city: SPRING CREEK ACRES · 172 people · 2019 | 2/9 | SYR4 |
| Arsenic | 9 µg/L 90% of the EPA limit 10 µg/L Highest in the city: 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 city: 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 city: 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 city: 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 city: 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 city: 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 city: 0.0040 mg/L — HOT SPRINGS VA CENTER · 445 people · 2025 | 9/9 | LCR |
Water suppliers serving Hot Springs
| Supplier | Population served |
|---|---|
| HOT SPRINGS | 3,395 |
| SOUTHERN BLACK HILLS WATER | 947 |
| HOT SPRINGS VA CENTER | 445 |
| SPRING CREEK ACRES | 172 |
| RUSHMORE RANCH ESTATES | 168 |
| COUNTRY CLUB ESTATES | 83 |
| LIBERTY HILLS COMMUNITY | 68 |
| PARAMOUNT POINT | 40 |
| GREEN ACRES WATER CORPORATION | 31 |
Frequently asked questions about Hot Springs tap water
Is Hot Springs tap water safe to drink?
EPA testing detected 14 contaminants in the water serving Hot Springs. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Hot Springs?
9 public water suppliers report drinking-water monitoring for Hot Springs, South Dakota to the EPA. Each is listed above with its population served.
What contaminants are in Hot Springs's water?
The contaminants EPA monitoring detected in Hot Springs include Nitrate, Fluoride, Copper, Lithium, Barium. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.