What was found in ZIP 55304
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 | 994 µg/L 25% of the EPA limit 4000 µg/L Main supplier: Andover · 21,455 people · 2019 | 1/1 | SYR4 |
| Copper | 456.4 µg/L 35% of the EPA limit 1300 µg/L Main supplier: Andover · 21,455 people · 2019 | 1/1 | SYR4 |
| Barium | 148.71 µg/L 7.4% of the EPA limit 2000 µg/L Main supplier: Andover · 21,455 people · 2017 | 1/1 | SYR4 |
| Cyanide | 70 µg/L 35% of the EPA limit 200 µg/L Main supplier: Andover · 21,455 people · 2017 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 28.05 pCi/L 187% of the EPA limit, at the 95th percentile of samples — 15 pCi/L Main supplier: Andover · 21,455 people · 2019 | 1/1 | SYR4 |
| Chloroform | 25.5 µg/L No EPA limit set Main supplier: Andover · 21,455 people · 2019 | 1/1 | SYR4 |
| Lithium | 9.6 µg/L No EPA limit set Main supplier: Andover · 21,455 people · 2024 | 1/1 | UCMR-5 |
| Trichloroacetic Acid | 8.2 µg/L No EPA limit set Main supplier: Andover · 21,455 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 7.755 µg/L No EPA limit set Main supplier: Andover · 21,455 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 4.4 µg/L No EPA limit set Main supplier: Andover · 21,455 people · 2019 | 1/1 | SYR4 |
| Lead | 2.595 µg/L 17% of the EPA limit 15 µg/L Main supplier: Andover · 21,455 people · 2019 | 1/1 | SYR4 |
| Arsenic | 1.822 µg/L 18% of the EPA limit 10 µg/L Main supplier: Andover · 21,455 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 0.9000 µg/L No EPA limit set Main supplier: Andover · 21,455 people · 2019 | 1/1 | SYR4 |
| Chromium | 0.2790 µg/L 0.3% of the EPA limit 100 µg/L Main supplier: Andover · 21,455 people · 2017 | 1/1 | SYR4 |
| Pfba | 0.0111 µg/L No EPA limit set Main supplier: Andover · 21,455 people · 2024 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: Andover · 21,455 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 55304
| Supplier | State | Population served |
|---|---|---|
| Andover | MN | 21,455 |
Frequently asked questions about ZIP 55304 tap water
Is the tap water in ZIP 55304 safe to drink?
EPA testing detected 16 contaminants across the water suppliers serving ZIP 55304. 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 55304?
1 public water supplier report EPA drinking-water monitoring for ZIP 55304. Each is listed above with its population served.
What contaminants are in ZIP 55304's water?
EPA monitoring detected Fluoride, Copper, Barium, Cyanide, Gross Alpha, Excl. Radon And U, and others across this ZIP's suppliers. The full list with levels and sources is above.