What was found in ZIP 57048
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 | 2300 µg/L 23% of the EPA limit 10000 µg/L Main supplier: MINNEHAHA COMMUNITY WATER CORP · 13,435 people · 2019 | 1/3 | SYR4 |
| Copper | 60 µg/L 4.6% of the EPA limit 1300 µg/L Main supplier: MINNEHAHA COMMUNITY WATER CORP · 13,435 people · 2018
Highest in the ZIP: 1303.5 µg/L — MONTROSE · 468 people · 2017 | 3/3 | SYR4 |
| Fluoride | 460 µg/L 12% of the EPA limit 4000 µg/L Highest in the ZIP: TM RURAL WATER DISTRICT · 4,250 people · 2019 | 1/3 | SYR4 |
| Lithium | 37.5 µg/L No EPA limit set Main supplier: MINNEHAHA COMMUNITY WATER CORP · 13,435 people · 2024
Highest in the ZIP: 95 µg/L — TM RURAL WATER DISTRICT · 4,250 people · 2025 | 2/3 | UCMR-5 |
| TTHM | 46.64 µg/L 58% of the EPA limit 80 µg/L Main supplier: MINNEHAHA COMMUNITY WATER CORP · 13,435 people · 2019
Highest in the ZIP: 56.98 µg/L — MONTROSE · 468 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 23.32 µg/L 39% of the EPA limit 60 µg/L Main supplier: MINNEHAHA COMMUNITY WATER CORP · 13,435 people · 2019 | 3/3 | SYR4 |
| Barium | 16.635 µg/L 0.8% of the EPA limit 2000 µg/L Main supplier: MINNEHAHA COMMUNITY WATER CORP · 13,435 people · 2012 | 2/3 | SYR4 |
| Lead | 2.675 µg/L 18% of the EPA limit 15 µg/L Main supplier: MINNEHAHA COMMUNITY WATER CORP · 13,435 people · 2018
Highest in the ZIP: 4.98 µg/L — MONTROSE · 468 people · 2017 | 3/3 | SYR4 |
| Arsenic | 2 µg/L 20% of the EPA limit 10 µg/L Highest in the ZIP: TM RURAL WATER DISTRICT · 4,250 people · 2014 | 1/3 | SYR4 |
| Selenium | 1.67 µg/L 3.3% of the EPA limit 50 µg/L Main supplier: MINNEHAHA COMMUNITY WATER CORP · 13,435 people · 2012 | 2/3 | SYR4 |
| Chromium | 0.7950 µg/L 0.8% of the EPA limit 100 µg/L Main supplier: MINNEHAHA COMMUNITY WATER CORP · 13,435 people · 2012
Highest in the ZIP: 1.1 µg/L — TM RURAL WATER DISTRICT · 4,250 people · 2014 | 2/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1 pCi/L 6.7% of the EPA limit 15 pCi/L Main supplier: MINNEHAHA COMMUNITY WATER CORP · 13,435 people · 2012 | 1/3 | SYR4 |
| Antimony, Total | 0.4000 µg/L 6.7% of the EPA limit 6 µg/L Main supplier: MINNEHAHA COMMUNITY WATER CORP · 13,435 people · 2012 | 1/3 | SYR4 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: MINNEHAHA COMMUNITY WATER CORP · 13,435 people · 2024
Highest in the ZIP: 0.0020 mg/L — MONTROSE · 468 people · 2023 | 3/3 | 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 57048
| Supplier | State | Population served |
|---|---|---|
| MINNEHAHA COMMUNITY WATER CORP | SD | 13,435 |
| TM RURAL WATER DISTRICT | SD | 4,250 |
| MONTROSE | SD | 468 |
Frequently asked questions about ZIP 57048 tap water
Is the tap water in ZIP 57048 safe to drink?
EPA testing detected 14 contaminants across the water suppliers serving ZIP 57048. 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 57048?
3 public water suppliers report EPA drinking-water monitoring for ZIP 57048. Each is listed above with its population served.
What contaminants are in ZIP 57048's water?
EPA monitoring detected Nitrate, Copper, Fluoride, Lithium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.