What was found in ZIP 57402
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 | 2900 µg/L 73% of the EPA limit 4000 µg/L Highest in the ZIP: BLUMENGARD COLONY · 133 people · 2013 | 18/24 | SYR4 |
| Copper | 170 µg/L 13% of the EPA limit 1300 µg/L Main supplier: ABERDEEN · 27,989 people · 2017
Highest in the ZIP: 2120 µg/L — PLEASANT VALLEY COLONY · 107 people · 2019 | 24/24 | SYR4 |
| Nitrate | 1400 µg/L 14% of the EPA limit 10000 µg/L Highest in the ZIP: GREENWOOD COLONY · 85 people · 2019 | 7/24 | SYR4 |
| Nitrite | 1086 µg/L 109% of the EPA limit, at the 95th percentile of samples — 1000 µg/L Highest in the ZIP: GREENWOOD COLONY · 85 people · 2018 | 2/24 | SYR4 |
| Lithium | 100 µg/L No EPA limit set Main supplier: ABERDEEN · 27,989 people · 2023 | 2/24 | UCMR-5 |
| Arsenic | 85.9 µg/L 859% of the EPA limit, at the 95th percentile of samples — 10 µg/L Highest in the ZIP: SUNSET COLONY · 140 people · 2012 | 5/24 | SYR4 |
| Barium | 72 µg/L 3.6% of the EPA limit 2000 µg/L Highest in the ZIP: PLEASANT VALLEY COLONY · 107 people · 2012 | 15/24 | SYR4 |
| Total Haloacetic Acids (HAA5) | 28.12 µg/L 47% of the EPA limit 60 µg/L Main supplier: ABERDEEN · 27,989 people · 2019 | 4/24 | SYR4 |
| TTHM | 22.39 µg/L 28% of the EPA limit 80 µg/L Main supplier: ABERDEEN · 27,989 people · 2019 | 4/24 | SYR4 |
| Chromium | 20.6 µg/L 21% of the EPA limit 100 µg/L Highest in the ZIP: BLUMENGARD COLONY · 133 people · 2013 | 11/24 | SYR4 |
| Lead | 14.7 µg/L 98% of the EPA limit 15 µg/L Main supplier: ABERDEEN · 27,989 people · 2017 | 24/24 | SYR4 |
| Selenium | 8.2 µg/L 16% of the EPA limit 50 µg/L Highest in the ZIP: BLUMENGARD COLONY · 133 people · 2013 | 12/24 | SYR4 |
| Gross Alpha, Excl. Radon And U | 7.4 pCi/L 49% of the EPA limit 15 pCi/L Highest in the ZIP: WHITE ROCK COLONY · 108 people · 2016 | 3/24 | SYR4 |
| Antimony, Total | 0.3000 µg/L 5% of the EPA limit 6 µg/L Highest in the ZIP: WEB WATER DEVELOPMENT ASSOCIATION · 20,750 people · 2013 | 1/24 | SYR4 |
| Thallium, Total | 0.1600 µg/L 8% of the EPA limit 2 µg/L Highest in the ZIP: MAXWELL COLONY · 150 people · 2019 | 1/24 | SYR4 |
| Pfba | 0.0081 µg/L No EPA limit set Main supplier: ABERDEEN · 27,989 people · 2023 | 1/24 | UCMR-5 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L Main supplier: ABERDEEN · 27,989 people · 2025
Highest in the ZIP: 0.0080 mg/L — MAXWELL COLONY · 150 people · 2025 | 24/24 | 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 57402
| Supplier | State | Population served |
|---|---|---|
| ABERDEEN | SD | 27,989 |
| WEB WATER DEVELOPMENT ASSOCIATION | SD | 20,750 |
| LAKESIDE ESTATES | SD | 460 |
| PRAIRIEWOOD PROPERTY OWNERS | SD | 300 |
| UPLAND COLONY | SD | 198 |
| MAXWELL COLONY | SD | 150 |
| SUNSET COLONY | SD | 140 |
| BLUMENGARD COLONY | SD | 133 |
| CLEARFIELD COLONY | SD | 120 |
| EVERGREEN COLONY | SD | 120 |
| LAKEVIEW COLONY | SD | 118 |
| WHITE ROCK COLONY | SD | 108 |
| SPINK COLONY | SD | 108 |
| PLEASANT VALLEY COLONY | SD | 107 |
| LONG LAKE COLONY | SD | 100 |
| HURON COLONY | SD | 95 |
| GLENDALE COLONY | SD | 95 |
| COLLINS COLONY | SD | 95 |
| PEARL CREEK COLONY | SD | 94 |
| RED WILLOW COLONY | SD | 93 |
| GREENWOOD COLONY | SD | 85 |
| RIVERSIDE COLONY | SD | 80 |
| CAMROSE COLONY | SD | 80 |
| SHAMROCK COLONY | SD | 75 |
Frequently asked questions about ZIP 57402 tap water
Is the tap water in ZIP 57402 safe to drink?
EPA testing detected 17 contaminants across the water suppliers serving ZIP 57402. 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 57402?
24 public water suppliers report EPA drinking-water monitoring for ZIP 57402. Each is listed above with its population served.
What contaminants are in ZIP 57402's water?
EPA monitoring detected Fluoride, Copper, Nitrate, Nitrite, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.