What was found in ZIP 55422
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 | 1200 µg/L 30% of the EPA limit 4000 µg/L Highest in the ZIP: Robbinsdale · 14,646 people · 2019 | 1/2 | SYR4 |
| Nitrate-Nitrite | 520 µg/L 5.2% of the EPA limit 10000 µg/L Highest in the ZIP: Robbinsdale · 14,646 people · 2019 | 1/2 | SYR4 |
| Copper | 66.82 µg/L 5.1% of the EPA limit 1300 µg/L Main supplier: Crystal · 22,937 people · 2018
Highest in the ZIP: 422.3 µg/L — Robbinsdale · 14,646 people · 2019 | 2/2 | SYR4 |
| Barium | 124.3 µg/L 6.2% of the EPA limit 2000 µg/L Highest in the ZIP: Robbinsdale · 14,646 people · 2012 | 1/2 | SYR4 |
| Chloroform | 54.95 µg/L No EPA limit set Main supplier: Crystal · 22,937 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 40 µg/L No EPA limit set Main supplier: Crystal · 22,937 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 12 µg/L No EPA limit set Main supplier: Crystal · 22,937 people · 2019 | 2/2 | SYR4 |
| Lithium | 10.7 µg/L No EPA limit set Highest in the ZIP: Robbinsdale · 14,646 people · 2023 | 1/2 | UCMR-5 |
| Gross Alpha, Excl. Radon And U | 10.125 pCi/L 68% of the EPA limit 15 pCi/L Highest in the ZIP: Robbinsdale · 14,646 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 8.02 µg/L No EPA limit set Main supplier: Crystal · 22,937 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 0.5950 µg/L No EPA limit set Main supplier: Crystal · 22,937 people · 2019
Highest in the ZIP: 7.9 µg/L — Robbinsdale · 14,646 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 4.4 µg/L No EPA limit set Main supplier: Crystal · 22,937 people · 2019
Highest in the ZIP: 6.8 µg/L — Robbinsdale · 14,646 people · 2019 | 2/2 | SYR4 |
| Lead | 6.3 µg/L 42% of the EPA limit 15 µg/L Main supplier: Crystal · 22,937 people · 2018
Highest in the ZIP: 6.54 µg/L — Robbinsdale · 14,646 people · 2019 | 2/2 | SYR4 |
| Bromoform | 3.605 µg/L No EPA limit set Highest in the ZIP: Robbinsdale · 14,646 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 2.8 µg/L No EPA limit set Highest in the ZIP: Robbinsdale · 14,646 people · 2019 | 1/2 | SYR4 |
| Chromium | 0.3820 µg/L 0.4% of the EPA limit 100 µg/L Highest in the ZIP: Robbinsdale · 14,646 people · 2013 | 1/2 | SYR4 |
| Trichloroethylene | 0.2185 µg/L 4.4% of the EPA limit 5 µg/L Highest in the ZIP: Robbinsdale · 14,646 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0128 µg/L No EPA limit set Main supplier: Crystal · 22,937 people · 2025
Highest in the ZIP: 0.0203 µg/L — Robbinsdale · 14,646 people · 2023 | 2/2 | UCMR-5 |
| PFHXS | 0.0043 µg/L No EPA limit set Highest in the ZIP: Robbinsdale · 14,646 people · 2023 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: Crystal · 22,937 people · 2024
Highest in the ZIP: 0.0020 mg/L — Robbinsdale · 14,646 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 55422
| Supplier | State | Population served |
|---|---|---|
| Crystal | MN | 22,937 |
| Robbinsdale | MN | 14,646 |
Frequently asked questions about ZIP 55422 tap water
Is the tap water in ZIP 55422 safe to drink?
EPA testing detected 20 contaminants across the water suppliers serving ZIP 55422. 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 55422?
2 public water suppliers report EPA drinking-water monitoring for ZIP 55422. Each is listed above with its population served.
What contaminants are in ZIP 55422's water?
EPA monitoring detected Fluoride, Nitrate-Nitrite, Copper, Barium, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.