What was found in ZIP 55373
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 | 1040 µg/L 26% of the EPA limit 4000 µg/L Main supplier: Rockford · 4,863 people · 2019
Highest in the ZIP: 1240 µg/L — Greenfield · 313 people · 2019 | 2/2 | SYR4 |
| Copper | 884.75 µg/L 68% of the EPA limit 1300 µg/L Main supplier: Rockford · 4,863 people · 2019 | 2/2 | SYR4 |
| Barium | 149.45 µg/L 7.5% of the EPA limit 2000 µg/L Main supplier: Rockford · 4,863 people · 2013 | 2/2 | SYR4 |
| Nitrate-Nitrite | 70 µg/L 0.7% of the EPA limit 10000 µg/L Main supplier: Rockford · 4,863 people · 2019 | 1/2 | SYR4 |
| Chloroform | 0.8650 µg/L No EPA limit set Main supplier: Rockford · 4,863 people · 2019
Highest in the ZIP: 39.15 µg/L — Greenfield · 313 people · 2019 | 2/2 | SYR4 |
| Lithium | 23 µg/L No EPA limit set Main supplier: Rockford · 4,863 people · 2025 | 1/2 | UCMR-5 |
| Gross Alpha, Excl. Radon And U | 14.4 pCi/L 96% of the EPA limit 15 pCi/L Highest in the ZIP: Greenfield · 313 people · 2019 | 1/2 | SYR4 |
| Trichloroacetic Acid | 1 µg/L No EPA limit set Main supplier: Rockford · 4,863 people · 2019
Highest in the ZIP: 9.78 µg/L — Greenfield · 313 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 1.77 µg/L No EPA limit set Main supplier: Rockford · 4,863 people · 2019
Highest in the ZIP: 9.07 µg/L — Greenfield · 313 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 4.68 µg/L No EPA limit set Highest in the ZIP: Greenfield · 313 people · 2019 | 1/2 | SYR4 |
| Lead | 2.05 µg/L 14% of the EPA limit 15 µg/L Main supplier: Rockford · 4,863 people · 2019
Highest in the ZIP: 3.14 µg/L — Greenfield · 313 people · 2017 | 2/2 | SYR4 |
| Arsenic | 2.238 µg/L 22% of the EPA limit 10 µg/L Main supplier: Rockford · 4,863 people · 2013 | 1/2 | SYR4 |
| Dibromochloromethane | 0.8800 µg/L No EPA limit set Highest in the ZIP: Greenfield · 313 people · 2019 | 1/2 | SYR4 |
| Chromium | 0.8700 µg/L 0.9% of the EPA limit 100 µg/L Main supplier: Rockford · 4,863 people · 2013 | 1/2 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: Rockford · 4,863 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 55373
| Supplier | State | Population served |
|---|---|---|
| Rockford | MN | 4,863 |
| Greenfield | MN | 313 |
Frequently asked questions about ZIP 55373 tap water
Is the tap water in ZIP 55373 safe to drink?
EPA testing detected 15 contaminants across the water suppliers serving ZIP 55373. 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 55373?
2 public water suppliers report EPA drinking-water monitoring for ZIP 55373. Each is listed above with its population served.
What contaminants are in ZIP 55373's water?
EPA monitoring detected Fluoride, Copper, Barium, Nitrate-Nitrite, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.