What was found in ZIP 58581
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 |
|---|---|---|---|
| Copper | 1038 µg/L 80% of the EPA limit 1300 µg/L Main supplier: WEB WATER DEVELOPMENT ASSOCIATION · 20,750 people · 2019 | 2/2 | SYR4 |
| Fluoride | 480 µg/L 12% of the EPA limit 4000 µg/L Main supplier: WEB WATER DEVELOPMENT ASSOCIATION · 20,750 people · 2019
Highest in the ZIP: 986 µg/L — SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2018 | 2/2 | SYR4 |
| Nitrate | 400 µg/L 4% of the EPA limit 10000 µg/L Main supplier: WEB WATER DEVELOPMENT ASSOCIATION · 20,750 people · 2019 | 1/2 | SYR4 |
| TTHM | 15.485 µg/L 19% of the EPA limit 80 µg/L Main supplier: WEB WATER DEVELOPMENT ASSOCIATION · 20,750 people · 2019
Highest in the ZIP: 77.134 µg/L — SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 70 µg/L 0.7% of the EPA limit 10000 µg/L Highest in the ZIP: SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2019 | 1/2 | SYR4 |
| Chloroform | 65.068 µg/L No EPA limit set Highest in the ZIP: SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2019 | 1/2 | SYR4 |
| Barium | 47.6 µg/L 2.4% of the EPA limit 2000 µg/L Main supplier: WEB WATER DEVELOPMENT ASSOCIATION · 20,750 people · 2013 | 2/2 | SYR4 |
| Lithium | 46 µg/L No EPA limit set Main supplier: WEB WATER DEVELOPMENT ASSOCIATION · 20,750 people · 2024 | 2/2 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 25.625 µg/L 43% of the EPA limit 60 µg/L Main supplier: WEB WATER DEVELOPMENT ASSOCIATION · 20,750 people · 2019
Highest in the ZIP: 30.876 µg/L — SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 18.44 µg/L No EPA limit set Highest in the ZIP: SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2019 | 1/2 | SYR4 |
| Trichloroacetic Acid | 10.9755 µg/L No EPA limit set Highest in the ZIP: SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2019 | 1/2 | SYR4 |
| Chromium | 4.7 µg/L 4.7% of the EPA limit 100 µg/L Main supplier: WEB WATER DEVELOPMENT ASSOCIATION · 20,750 people · 2013
Highest in the ZIP: 8.9 µg/L — SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2018 | 2/2 | SYR4 |
| Bromodichloromethane | 8.406 µg/L No EPA limit set Highest in the ZIP: SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2019 | 1/2 | SYR4 |
| Bromate | 7.535 µg/L 75% of the EPA limit 10 µg/L Highest in the ZIP: SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 5.942 µg/L No EPA limit set Highest in the ZIP: SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2019 | 1/2 | SYR4 |
| Lead | 3.135 µg/L 21% of the EPA limit 15 µg/L Main supplier: WEB WATER DEVELOPMENT ASSOCIATION · 20,750 people · 2019
Highest in the ZIP: 3.188 µg/L — SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 2.904 µg/L No EPA limit set Highest in the ZIP: SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2019 | 1/2 | SYR4 |
| Arsenic | 2.66 µg/L 27% of the EPA limit 10 µg/L Highest in the ZIP: SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2016 | 1/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.321 pCi/L 15% of the EPA limit 15 pCi/L Highest in the ZIP: SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2018 | 1/2 | SYR4 |
| Selenium | 1.7 µg/L 3.4% of the EPA limit 50 µg/L Main supplier: WEB WATER DEVELOPMENT ASSOCIATION · 20,750 people · 2013 | 1/2 | SYR4 |
| Combined Uranium | 0.8379 µg/L 2.8% of the EPA limit 30 µg/L Highest in the ZIP: SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2018 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.7397 pCi/L 15% of the EPA limit 5 pCi/L Highest in the ZIP: SOUTH CENTRAL RWD-EMMONS · 3,650 people · 2018 | 1/2 | SYR4 |
| Antimony, Total | 0.3000 µg/L 5% of the EPA limit 6 µg/L Main supplier: WEB WATER DEVELOPMENT ASSOCIATION · 20,750 people · 2013 | 1/2 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: WEB WATER DEVELOPMENT ASSOCIATION · 20,750 people · 2025 | 2/2 | 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 58581
| Supplier | State | Population served |
|---|---|---|
| WEB WATER DEVELOPMENT ASSOCIATION | SD | 20,750 |
| SOUTH CENTRAL RWD-EMMONS | ND | 3,650 |
Frequently asked questions about ZIP 58581 tap water
Is the tap water in ZIP 58581 safe to drink?
EPA testing detected 24 contaminants across the water suppliers serving ZIP 58581. 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 58581?
2 public water suppliers report EPA drinking-water monitoring for ZIP 58581. Each is listed above with its population served.
What contaminants are in ZIP 58581's water?
EPA monitoring detected Copper, Fluoride, Nitrate, TTHM, Nitrate-Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.