What was found in Oakdale's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 2600 µg/L 26% of the EPA limit 10000 µg/L Main supplier: Oakdale · 30,144 people · 2019
Highest in the city: 3900 µg/L — Bay Lake Reserve Development · 80 people · 2019 | 3/3 | SYR4 |
| Fluoride | 1445 µg/L 36% of the EPA limit 4000 µg/L Main supplier: Oakdale · 30,144 people · 2019 | 2/3 | SYR4 |
| Copper | 128.5 µg/L 9.9% of the EPA limit 1300 µg/L Main supplier: Oakdale · 30,144 people · 2019
Highest in the city: 321.35 µg/L — Oakhill Cottages · 65 people · 2019 | 3/3 | SYR4 |
| Barium | 64.53 µg/L 3.2% of the EPA limit 2000 µg/L Main supplier: Oakdale · 30,144 people · 2018 | 2/3 | SYR4 |
| Nitrite | 10 µg/L 1% of the EPA limit 1000 µg/L Highest in the city: Oakhill Cottages · 65 people · 2019 | 1/3 | SYR4 |
| Chloroform | 5.725 µg/L No EPA limit set Main supplier: Oakdale · 30,144 people · 2019 | 2/3 | SYR4 |
| Lead | 4.49 µg/L 30% of the EPA limit 15 µg/L Main supplier: Oakdale · 30,144 people · 2019 | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.5 pCi/L 23% of the EPA limit 15 pCi/L Main supplier: Oakdale · 30,144 people · 2016
Highest in the city: 4.3 pCi/L — Oakhill Cottages · 65 people · 2019 | 2/3 | SYR4 |
| Dichloroacetic Acid | 3.97 µg/L No EPA limit set Main supplier: Oakdale · 30,144 people · 2019 | 1/3 | SYR4 |
| Arsenic | 1.14 µg/L 11% of the EPA limit 10 µg/L Main supplier: Oakdale · 30,144 people · 2018
Highest in the city: 2.24 µg/L — Oakhill Cottages · 65 people · 2019 | 2/3 | SYR4 |
| Bromodichloromethane | 2.1 µg/L No EPA limit set Main supplier: Oakdale · 30,144 people · 2019 | 1/3 | SYR4 |
| Dibromochloromethane | 1.6 µg/L No EPA limit set Main supplier: Oakdale · 30,144 people · 2019 | 1/3 | SYR4 |
| Trichloroacetic Acid | 1.48 µg/L No EPA limit set Main supplier: Oakdale · 30,144 people · 2019 | 1/3 | SYR4 |
| Dibromoacetic Acid | 1.3 µg/L No EPA limit set Main supplier: Oakdale · 30,144 people · 2019 | 1/3 | SYR4 |
| Pfba | 1.27 µg/L No EPA limit set Main supplier: Oakdale · 30,144 people · 2025 | 1/3 | UCMR-5 |
| Chromium | 1.1155 µg/L 1.1% of the EPA limit 100 µg/L Main supplier: Oakdale · 30,144 people · 2018 | 1/3 | SYR4 |
| Bromoform | 0.6800 µg/L No EPA limit set Main supplier: Oakdale · 30,144 people · 2019 | 1/3 | SYR4 |
| Toluene | 0.3500 µg/L 0% of the EPA limit 1000 µg/L Highest in the city: Oakhill Cottages · 65 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: Oakdale · 30,144 people · 2025 | 3/3 | LCR |
Water suppliers serving Oakdale
| Supplier | Population served |
|---|---|
| Oakdale | 30,144 |
| Bay Lake Reserve Development | 80 |
| Oakhill Cottages | 65 |
Frequently asked questions about Oakdale tap water
Is Oakdale tap water safe to drink?
EPA testing detected 19 contaminants in the water serving Oakdale. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Oakdale?
3 public water suppliers report drinking-water monitoring for Oakdale, Minnesota to the EPA. Each is listed above with its population served.
What contaminants are in Oakdale's water?
The contaminants EPA monitoring detected in Oakdale include Nitrate-Nitrite, Fluoride, Copper, Barium, Nitrite. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.