What was found in ZIP 55057
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-Nitrite | 4120 µg/L 41% of the EPA limit 10000 µg/L Main supplier: Northfield · 20,790 people · 2019 | 1/1 | SYR4 |
| Fluoride | 1545 µg/L 39% of the EPA limit 4000 µg/L Main supplier: Northfield · 20,790 people · 2019 | 1/1 | SYR4 |
| Copper | 747.6 µg/L 58% of the EPA limit 1300 µg/L Main supplier: Northfield · 20,790 people · 2019 | 1/1 | SYR4 |
| Barium | 29.7 µg/L 1.5% of the EPA limit 2000 µg/L Main supplier: Northfield · 20,790 people · 2018 | 1/1 | SYR4 |
| Chromium | 14.856 µg/L 15% of the EPA limit 100 µg/L Main supplier: Northfield · 20,790 people · 2018 | 1/1 | SYR4 |
| Lithium | 9.2 µg/L No EPA limit set Main supplier: Northfield · 20,790 people · 2024 | 1/1 | UCMR-5 |
| Gross Alpha, Excl. Radon And U | 5.85 pCi/L 39% of the EPA limit 15 pCi/L Main supplier: Northfield · 20,790 people · 2019 | 1/1 | SYR4 |
| Chloroform | 3.38 µg/L No EPA limit set Main supplier: Northfield · 20,790 people · 2019 | 1/1 | SYR4 |
| Lead | 3.32 µg/L 22% of the EPA limit 15 µg/L Main supplier: Northfield · 20,790 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 2.78 µg/L No EPA limit set Main supplier: Northfield · 20,790 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 1.8 µg/L No EPA limit set Main supplier: Northfield · 20,790 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 1.55 µg/L No EPA limit set Main supplier: Northfield · 20,790 people · 2019 | 1/1 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.4 µg/L 23% of the EPA limit 6 µg/L Main supplier: Northfield · 20,790 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 1.3 µg/L No EPA limit set Main supplier: Northfield · 20,790 people · 2019 | 1/1 | SYR4 |
| Bromoform | 0.7000 µg/L No EPA limit set Main supplier: Northfield · 20,790 people · 2019 | 1/1 | SYR4 |
| Pfba | 0.0085 µg/L No EPA limit set Main supplier: Northfield · 20,790 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L Main supplier: Northfield · 20,790 people · 2025 | 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 55057
| Supplier | State | Population served |
|---|---|---|
| Northfield | MN | 20,790 |
Frequently asked questions about ZIP 55057 tap water
Is the tap water in ZIP 55057 safe to drink?
EPA testing detected 17 contaminants across the water suppliers serving ZIP 55057. 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 55057?
1 public water supplier report EPA drinking-water monitoring for ZIP 55057. Each is listed above with its population served.
What contaminants are in ZIP 55057's water?
EPA monitoring detected Nitrate-Nitrite, Fluoride, Copper, Barium, Chromium, and others across this ZIP's suppliers. The full list with levels and sources is above.