What was found in ZIP 55318
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 | 1440 µg/L 36% of the EPA limit 4000 µg/L Main supplier: Chaska · 30,000 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 820 µg/L 8.2% of the EPA limit 10000 µg/L Main supplier: Chaska · 30,000 people · 2019 | 1/1 | SYR4 |
| Copper | 343.55 µg/L 26% of the EPA limit 1300 µg/L Main supplier: Chaska · 30,000 people · 2019 | 1/1 | SYR4 |
| Barium | 144.56 µg/L 7.2% of the EPA limit 2000 µg/L Main supplier: Chaska · 30,000 people · 2012 | 1/1 | SYR4 |
| Chloroform | 25.35 µg/L No EPA limit set Main supplier: Chaska · 30,000 people · 2019 | 1/1 | SYR4 |
| Lithium | 15.8 µg/L No EPA limit set Main supplier: Chaska · 30,000 people · 2023 | 1/1 | UCMR-5 |
| Bromodichloromethane | 15.5 µg/L No EPA limit set Main supplier: Chaska · 30,000 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 10.5 µg/L No EPA limit set Main supplier: Chaska · 30,000 people · 2019 | 1/1 | SYR4 |
| Lead | 7.675 µg/L 51% of the EPA limit 15 µg/L Main supplier: Chaska · 30,000 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6 pCi/L 40% of the EPA limit 15 pCi/L Main supplier: Chaska · 30,000 people · 2017 | 1/1 | SYR4 |
| Dichloroacetic Acid | 5.575 µg/L No EPA limit set Main supplier: Chaska · 30,000 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 3.51 µg/L No EPA limit set Main supplier: Chaska · 30,000 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 2.24 µg/L No EPA limit set Main supplier: Chaska · 30,000 people · 2019 | 1/1 | SYR4 |
| Bromoform | 1.6 µg/L No EPA limit set Main supplier: Chaska · 30,000 people · 2019 | 1/1 | SYR4 |
| Arsenic | 1.52 µg/L 15% of the EPA limit 10 µg/L Main supplier: Chaska · 30,000 people · 2012 | 1/1 | SYR4 |
| Chromium | 0.2400 µg/L 0.2% of the EPA limit 100 µg/L Main supplier: Chaska · 30,000 people · 2014 | 1/1 | SYR4 |
| Lead | 0.0060 mg/L 40% of the EPA limit 0.0150 mg/L Main supplier: Chaska · 30,000 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 55318
| Supplier | State | Population served |
|---|---|---|
| Chaska | MN | 30,000 |
Frequently asked questions about ZIP 55318 tap water
Is the tap water in ZIP 55318 safe to drink?
EPA testing detected 17 contaminants across the water suppliers serving ZIP 55318. 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 55318?
1 public water supplier report EPA drinking-water monitoring for ZIP 55318. Each is listed above with its population served.
What contaminants are in ZIP 55318'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.