What was found in St. Michael'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 |
|---|---|---|---|
| Fluoride | 502 µg/L 13% of the EPA limit 4000 µg/L Main supplier: SPIRIT LAKE WATER MANAGEMENT RWS · 4,400 people · 2013 | 1/1 | SYR4 |
| Copper | 446.8 µg/L 34% of the EPA limit 1300 µg/L Main supplier: SPIRIT LAKE WATER MANAGEMENT RWS · 4,400 people · 2018 | 1/1 | SYR4 |
| Nitrate-Nitrite | 380 µg/L 3.8% of the EPA limit 10000 µg/L Main supplier: SPIRIT LAKE WATER MANAGEMENT RWS · 4,400 people · 2019 | 1/1 | SYR4 |
| Cyanide | 72.45 µg/L 36% of the EPA limit 200 µg/L Main supplier: SPIRIT LAKE WATER MANAGEMENT RWS · 4,400 people · 2018 | 1/1 | SYR4 |
| Barium | 47.1 µg/L 2.4% of the EPA limit 2000 µg/L Main supplier: SPIRIT LAKE WATER MANAGEMENT RWS · 4,400 people · 2013 | 1/1 | SYR4 |
| Lithium | 26.6 µg/L No EPA limit set Main supplier: SPIRIT LAKE WATER MANAGEMENT RWS · 4,400 people · 2025 | 1/1 | UCMR-5 |
| Arsenic | 13.85 µg/L 139% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: SPIRIT LAKE WATER MANAGEMENT RWS · 4,400 people · 2019 | 1/1 | SYR4 |
| Chromium | 10.706 µg/L 11% of the EPA limit 100 µg/L Main supplier: SPIRIT LAKE WATER MANAGEMENT RWS · 4,400 people · 2013 | 1/1 | SYR4 |
| Endothall | 9 µg/L 9% of the EPA limit 100 µg/L Main supplier: SPIRIT LAKE WATER MANAGEMENT RWS · 4,400 people · 2019 | 1/1 | SYR4 |
| Selenium | 2.26 µg/L 4.5% of the EPA limit 50 µg/L Main supplier: SPIRIT LAKE WATER MANAGEMENT RWS · 4,400 people · 2013 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.2625 µg/L 2.1% of the EPA limit 60 µg/L Main supplier: SPIRIT LAKE WATER MANAGEMENT RWS · 4,400 people · 2019 | 1/1 | SYR4 |
| Lead | 1.1 µg/L 7.3% of the EPA limit 15 µg/L Main supplier: SPIRIT LAKE WATER MANAGEMENT RWS · 4,400 people · 2018 | 1/1 | SYR4 |
| TTHM | 0.7020 µg/L 0.9% of the EPA limit 80 µg/L Main supplier: SPIRIT LAKE WATER MANAGEMENT RWS · 4,400 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0015 mg/L 10% of the EPA limit 0.0150 mg/L Main supplier: SPIRIT LAKE WATER MANAGEMENT RWS · 4,400 people · 2024 | 1/1 | LCR |
Water suppliers serving St. Michael
| Supplier | Population served |
|---|---|
| SPIRIT LAKE WATER MANAGEMENT RWS | 4,400 |
Frequently asked questions about St. Michael tap water
Is St. Michael tap water safe to drink?
EPA testing detected 14 contaminants in the water serving St. Michael. 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 St. Michael?
1 public water supplier report drinking-water monitoring for St. Michael, North Dakota to the EPA. Each is listed above with its population served.
What contaminants are in St. Michael's water?
The contaminants EPA monitoring detected in St. Michael include Fluoride, Copper, Nitrate-Nitrite, Cyanide, Barium. 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.