What was found in ZIP 57709
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 | 489 µg/L 4.9% of the EPA limit 10000 µg/L Main supplier: CHAPEL LANE WATER COMPANY · 1,200 people · 2018
Highest in the ZIP: 5960 µg/L — GOLDEN HILLS HOMES · 47 people · 2019 | 17/23 | SYR4 |
| Copper | 523.4 µg/L 40% of the EPA limit 1300 µg/L Main supplier: CHAPEL LANE WATER COMPANY · 1,200 people · 2018
Highest in the ZIP: 794.3 µg/L — STAGEBARN SANITARY DISTRICT · 295 people · 2019 | 23/23 | SYR4 |
| Fluoride | 500 µg/L 13% of the EPA limit 4000 µg/L Highest in the ZIP: PRAIRIE HAVEN SUBDIVISION · 105 people · 2018 | 18/23 | SYR4 |
| Barium | 123 µg/L 6.2% of the EPA limit 2000 µg/L Main supplier: CHAPEL LANE WATER COMPANY · 1,200 people · 2012
Highest in the ZIP: 399 µg/L — SUN VALLEY DEVELOPMENT · 650 people · 2013 | 20/23 | SYR4 |
| Nitrite | 107 µg/L 11% of the EPA limit 1000 µg/L Highest in the ZIP: PRAIRIE ACRES LLC · 350 people · 2018 | 1/23 | SYR4 |
| Gross Alpha, Excl. Radon And U | 17.305 pCi/L 115% of the EPA limit, at the 95th percentile of samples — 15 pCi/L Highest in the ZIP: PRAIRIE HAVEN SUBDIVISION · 105 people · 2019 | 18/23 | SYR4 |
| TTHM | 14.0775 µg/L 18% of the EPA limit 80 µg/L Main supplier: CHAPEL LANE WATER COMPANY · 1,200 people · 2019
Highest in the ZIP: 14.672 µg/L — GOLDEN HILLS HOMES · 47 people · 2019 | 16/23 | SYR4 |
| Selenium | 12 µg/L 24% of the EPA limit 50 µg/L Highest in the ZIP: PRAIRIE ACRES NORTH · 288 people · 2013 | 3/23 | SYR4 |
| Lead | 3.65 µg/L 24% of the EPA limit 15 µg/L Main supplier: CHAPEL LANE WATER COMPANY · 1,200 people · 2018
Highest in the ZIP: 9.2 µg/L — EDELWEISS MOUNTAIN IMPROVEMENT ASSOC · 70 people · 2018 | 23/23 | SYR4 |
| Combined Uranium | 8.591 µg/L 29% of the EPA limit 30 µg/L Highest in the ZIP: PRAIRIE HAVEN SUBDIVISION · 105 people · 2019 | 1/23 | SYR4 |
| Total Haloacetic Acids (HAA5) | 7.51 µg/L 13% of the EPA limit 60 µg/L Highest in the ZIP: B & J MOBILE HOME PARK · 135 people · 2019 | 2/23 | SYR4 |
| Arsenic | 6 µg/L 60% of the EPA limit 10 µg/L Highest in the ZIP: WONDERLAND HOMES · 750 people · 2012 | 5/23 | SYR4 |
| Chromium | 2 µg/L 2% of the EPA limit 100 µg/L Highest in the ZIP: PONDEROSA MOBILE HOME RANCH · 150 people · 2012 | 1/23 | SYR4 |
| Mercury | 0.2000 µg/L 10% of the EPA limit 2 µg/L Highest in the ZIP: CARRIAGE HILLS · 267 people · 2012 | 1/23 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: CHAPEL LANE WATER COMPANY · 1,200 people · 2024
Highest in the ZIP: 0.0140 mg/L — EDELWEISS MOUNTAIN IMPROVEMENT ASSOC · 70 people · 2024 | 23/23 | 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 57709
| Supplier | State | Population served |
|---|---|---|
| CHAPEL LANE WATER COMPANY | SD | 1,200 |
| WONDERLAND HOMES | SD | 750 |
| SUN VALLEY DEVELOPMENT | SD | 650 |
| PRAIRIE ACRES LLC | SD | 350 |
| STAGEBARN SANITARY DISTRICT | SD | 295 |
| PRAIRIE ACRES NORTH | SD | 288 |
| CARRIAGE HILLS | SD | 267 |
| DRY CREEK ESTATES | SD | 233 |
| BOULDER PARK WATER USERS ASSOCIATION | SD | 200 |
| PRAIRIE ACRES SOUTH | SD | 170 |
| STRATO RIM ESTATES WATER COMPANY | SD | 170 |
| PONDEROSA MOBILE HOME RANCH | SD | 150 |
| B & J MOBILE HOME PARK | SD | 135 |
| MIDLAND HEIGHTS | SD | 130 |
| EAST RIDGE ACRES | SD | 118 |
| ELK CREEK VILLAGE | SD | 110 |
| PRAIRIE HAVEN SUBDIVISION | SD | 105 |
| EDELWEISS MOUNTAIN IMPROVEMENT ASSOC | SD | 70 |
| ELK VALLEY RANCHETTES | SD | 62 |
| GOLDEN HILLS HOMES | SD | 47 |
| RIMROCK RIDGE WATER ASSOCIATION | SD | 35 |
| PONDEROSA WATER COMPANY | SD | 25 |
| PINEVIEW WATER ASSOCIATION | SD | 25 |
Frequently asked questions about ZIP 57709 tap water
Is the tap water in ZIP 57709 safe to drink?
EPA testing detected 15 contaminants across the water suppliers serving ZIP 57709. 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 57709?
23 public water suppliers report EPA drinking-water monitoring for ZIP 57709. Each is listed above with its population served.
What contaminants are in ZIP 57709's water?
EPA monitoring detected Nitrate, Copper, Fluoride, Barium, Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.