What was found in ZIP 57357
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 |
|---|---|---|---|
| Fluoride | 439.5 µg/L 11% of the EPA limit 4000 µg/L Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2019 | 1/1 | SYR4 |
| Nitrate | 400 µg/L 4% of the EPA limit 10000 µg/L Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2019 | 1/1 | SYR4 |
| Copper | 180.99999999999994 µg/L 14% of the EPA limit 1300 µg/L Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2018 | 1/1 | SYR4 |
| TTHM | 75.065 µg/L 94% of the EPA limit 80 µg/L Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2019 | 1/1 | SYR4 |
| Lithium | 61.5 µg/L No EPA limit set Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2025 | 1/1 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 59.90999999999999 µg/L 100% of the EPA limit 60 µg/L Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2019 | 1/1 | SYR4 |
| Barium | 41.2 µg/L 2.1% of the EPA limit 2000 µg/L Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2012 | 1/1 | SYR4 |
| Lead | 3.505 µg/L 23% of the EPA limit 15 µg/L Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2018 | 1/1 | SYR4 |
| Arsenic | 2 µg/L 20% of the EPA limit 10 µg/L Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2012 | 1/1 | SYR4 |
| Selenium | 1.685 µg/L 3.4% of the EPA limit 50 µg/L Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2012 | 1/1 | SYR4 |
| Chromium | 0.9000 µg/L 0.9% of the EPA limit 100 µg/L Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2012 | 1/1 | SYR4 |
| Antimony, Total | 0.4950 µg/L 8.3% of the EPA limit 6 µg/L Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2012 | 1/1 | SYR4 |
| Lead | 0.0040 mg/L 27% of the EPA limit 0.0150 mg/L Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2024 | 1/1 | 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 57357
| Supplier | State | Population served |
|---|---|---|
| RANDALL COMMUNITY WATER DISTRICT | SD | 6,248 |
Frequently asked questions about ZIP 57357 tap water
Is the tap water in ZIP 57357 safe to drink?
EPA testing detected 13 contaminants across the water suppliers serving ZIP 57357. 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 57357?
1 public water supplier report EPA drinking-water monitoring for ZIP 57357. Each is listed above with its population served.
What contaminants are in ZIP 57357's water?
EPA monitoring detected Fluoride, Nitrate, Copper, TTHM, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.