What was found in Black Eagle'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 | 3155 µg/L 79% of the EPA limit 4000 µg/L Highest in the city: WINDY ACRES WUA · 50 people · 2018 | 2/3 | SYR4 |
| Copper | 268 µg/L 21% of the EPA limit 1300 µg/L Main supplier: BLACK EAGLE CASCADE COUNTY WATER SEWER · 1,233 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 70.55 µg/L 118% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: BLACK EAGLE CASCADE COUNTY WATER SEWER · 1,233 people · 2019 | 3/3 | SYR4 |
| TTHM | 69.5 µg/L 87% of the EPA limit 80 µg/L Main supplier: BLACK EAGLE CASCADE COUNTY WATER SEWER · 1,233 people · 2019 | 3/3 | SYR4 |
| Chloroform | 54.5 µg/L No EPA limit set Main supplier: BLACK EAGLE CASCADE COUNTY WATER SEWER · 1,233 people · 2019 | 2/3 | SYR4 |
| Trichloroacetic Acid | 43.9 µg/L No EPA limit set Main supplier: BLACK EAGLE CASCADE COUNTY WATER SEWER · 1,233 people · 2019 | 1/3 | SYR4 |
| Dichloroacetic Acid | 28.5 µg/L No EPA limit set Main supplier: BLACK EAGLE CASCADE COUNTY WATER SEWER · 1,233 people · 2019 | 1/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 23.2 pCi/L 155% of the EPA limit, at the 95th percentile of samples — 15 pCi/L Highest in the city: WINDY ACRES WUA · 50 people · 2019 | 2/3 | SYR4 |
| Nitrate-Nitrite | 20 µg/L 0.2% of the EPA limit 10000 µg/L Highest in the city: HOMESTEAD ACRES COUNTY WATER AND SEWER · 500 people · 2019 | 2/3 | SYR4 |
| Bromodichloromethane | 14.5 µg/L No EPA limit set Main supplier: BLACK EAGLE CASCADE COUNTY WATER SEWER · 1,233 people · 2019 | 3/3 | SYR4 |
| Lead | 13.4 µg/L 89% of the EPA limit 15 µg/L Main supplier: BLACK EAGLE CASCADE COUNTY WATER SEWER · 1,233 people · 2019 | 3/3 | SYR4 |
| Arsenic | 11.1 µg/L 111% of the EPA limit, at the 95th percentile of samples — 10 µg/L Highest in the city: WINDY ACRES WUA · 50 people · 2019 | 1/3 | SYR4 |
| Bromoform | 8.54 µg/L No EPA limit set Highest in the city: WINDY ACRES WUA · 50 people · 2019 | 1/3 | SYR4 |
| Gross Beta Particle Activity | 7.9 pCi/L No EPA limit set Highest in the city: HOMESTEAD ACRES COUNTY WATER AND SEWER · 500 people · 2015 | 1/3 | SYR4 |
| Dibromoacetic Acid | 0.5410 µg/L No EPA limit set Main supplier: BLACK EAGLE CASCADE COUNTY WATER SEWER · 1,233 people · 2019
Highest in the city: 5.035 µg/L — WINDY ACRES WUA · 50 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 3.05 µg/L No EPA limit set Main supplier: BLACK EAGLE CASCADE COUNTY WATER SEWER · 1,233 people · 2019 | 3/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.9 pCi/L 38% of the EPA limit 5 pCi/L Highest in the city: HOMESTEAD ACRES COUNTY WATER AND SEWER · 500 people · 2015 | 1/3 | SYR4 |
| Monochloroacetic Acid | 1.86 µg/L No EPA limit set Main supplier: BLACK EAGLE CASCADE COUNTY WATER SEWER · 1,233 people · 2019 | 1/3 | SYR4 |
| Monobromoacetic Acid | 1.325 µg/L No EPA limit set Main supplier: BLACK EAGLE CASCADE COUNTY WATER SEWER · 1,233 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: BLACK EAGLE CASCADE COUNTY WATER SEWER · 1,233 people · 2025
Highest in the city: 0.0010 mg/L — WINDY ACRES WUA · 50 people · 2025 | 3/3 | LCR |
Water suppliers serving Black Eagle
| Supplier | Population served |
|---|---|
| BLACK EAGLE CASCADE COUNTY WATER SEWER | 1,233 |
| HOMESTEAD ACRES COUNTY WATER AND SEWER | 500 |
| WINDY ACRES WUA | 50 |
Frequently asked questions about Black Eagle tap water
Is Black Eagle tap water safe to drink?
EPA testing detected 20 contaminants in the water serving Black Eagle. 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 Black Eagle?
3 public water suppliers report drinking-water monitoring for Black Eagle, Montana to the EPA. Each is listed above with its population served.
What contaminants are in Black Eagle's water?
The contaminants EPA monitoring detected in Black Eagle include Fluoride, Copper, Total Haloacetic Acids (HAA5), TTHM, Chloroform. 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.