What was found in Cut Bank'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 | 660 µg/L 6.6% of the EPA limit 10000 µg/L Main supplier: CUT BANK CITY OF · 3,105 people · 2019
Highest in the city: 26235 µg/L — HIDDEN LAKE COLONY · 80 people · 2019 | 7/9 | SYR4 |
| Fluoride | 2335 µg/L 58% of the EPA limit 4000 µg/L Highest in the city: HIDDEN LAKE COLONY · 80 people · 2017 | 4/9 | SYR4 |
| Copper | 113.45 µg/L 8.7% of the EPA limit 1300 µg/L Main supplier: CUT BANK CITY OF · 3,105 people · 2017
Highest in the city: 606.8 µg/L — NCMRWA SHELBY TO ETHRIDGE · 70 people · 2018 | 8/9 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L Main supplier: CUT BANK CITY OF · 3,105 people · 2019
Highest in the city: 393.4 µg/L — HIDDEN LAKE COLONY · 80 people · 2019 | 2/9 | SYR4 |
| Barium | 200 µg/L 10% of the EPA limit 2000 µg/L Highest in the city: SEVILLE COLONY · 116 people · 2019 | 2/9 | SYR4 |
| Total Haloacetic Acids (HAA5) | 62.6 µg/L 104% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: CUT BANK CITY OF · 3,105 people · 2019 | 5/9 | SYR4 |
| TTHM | 60 µg/L 75% of the EPA limit 80 µg/L Main supplier: CUT BANK CITY OF · 3,105 people · 2019 | 5/9 | SYR4 |
| Trichloroacetic Acid | 30.25 µg/L No EPA limit set Main supplier: CUT BANK CITY OF · 3,105 people · 2019 | 5/9 | SYR4 |
| Dichloroacetic Acid | 29.35 µg/L No EPA limit set Main supplier: CUT BANK CITY OF · 3,105 people · 2019 | 5/9 | SYR4 |
| Chloroform | 26.1 µg/L No EPA limit set Main supplier: CUT BANK CITY OF · 3,105 people · 2019 | 5/9 | SYR4 |
| Bromodichloromethane | 21 µg/L No EPA limit set Main supplier: CUT BANK CITY OF · 3,105 people · 2019 | 5/9 | SYR4 |
| Combined Uranium | 2.95 µg/L 9.8% of the EPA limit 30 µg/L Main supplier: CUT BANK CITY OF · 3,105 people · 2018
Highest in the city: 20 µg/L — GLENDALE COLONY · 150 people · 2017 | 5/9 | SYR4 |
| Antimony, Total | 14 µg/L 233% of the EPA limit, at the 95th percentile of samples — 6 µg/L Highest in the city: HIDDEN LAKE COLONY · 80 people · 2019 | 1/9 | SYR4 |
| Dibromochloromethane | 10.35 µg/L No EPA limit set Main supplier: CUT BANK CITY OF · 3,105 people · 2019 | 5/9 | SYR4 |
| Gross Alpha, Excl. Radon And U | 9.665 pCi/L 64% of the EPA limit 15 pCi/L Main supplier: CUT BANK CITY OF · 3,105 people · 2018 | 5/9 | SYR4 |
| Lead | 3 µg/L 20% of the EPA limit 15 µg/L Main supplier: CUT BANK CITY OF · 3,105 people · 2017
Highest in the city: 8.75 µg/L — ZENITH COLONY · 70 people · 2019 | 4/9 | SYR4 |
| Xylenes, Total | 7.455 µg/L 0.1% of the EPA limit 10000 µg/L Highest in the city: BIG SKY COLONY CUT BANK · 107 people · 2016 | 1/9 | SYR4 |
| Monochloroacetic Acid | 3.6 µg/L No EPA limit set Main supplier: CUT BANK CITY OF · 3,105 people · 2019 | 2/9 | SYR4 |
| Bromoform | 1.1625 µg/L No EPA limit set Main supplier: CUT BANK CITY OF · 3,105 people · 2019
Highest in the city: 3.5 µg/L — BIG SKY COLONY CUT BANK · 107 people · 2019 | 2/9 | SYR4 |
| Dibromoacetic Acid | 2.9 µg/L No EPA limit set Main supplier: CUT BANK CITY OF · 3,105 people · 2019 | 5/9 | SYR4 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L Highest in the city: HIDDEN LAKE COLONY · 80 people · 2019 | 3/9 | SYR4 |
| Combined Radium (-226 And -228) | 0.9000 pCi/L 18% of the EPA limit 5 pCi/L Main supplier: CUT BANK CITY OF · 3,105 people · 2018
Highest in the city: 1.575 pCi/L — ZENITH COLONY · 70 people · 2019 | 3/9 | SYR4 |
| Monobromoacetic Acid | 1.222 µg/L No EPA limit set Main supplier: CUT BANK CITY OF · 3,105 people · 2019 | 1/9 | SYR4 |
| Ethylbenzene | 0.8885 µg/L 0.1% of the EPA limit 700 µg/L Highest in the city: BIG SKY COLONY CUT BANK · 107 people · 2016 | 1/9 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CUT BANK CITY OF · 3,105 people · 2023
Highest in the city: 0.0030 mg/L — GLENDALE COLONY · 150 people · 2026 | 9/9 | 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.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Cut Bank
| Supplier | Population served |
|---|---|
| CUT BANK CITY OF | 3,105 |
| GLENDALE COLONY | 150 |
| SEVILLE COLONY | 116 |
| BIG SKY COLONY CUT BANK | 107 |
| GLACIER COLONY | 80 |
| HIDDEN LAKE COLONY | 80 |
| ZENITH COLONY | 70 |
| NCMRWA SHELBY TO ETHRIDGE | 70 |
| NCMRWA ETHERIDGE TO CUTBANK | 25 |
Frequently asked questions about Cut Bank tap water
Is Cut Bank tap water safe to drink?
EPA testing detected 25 contaminants in the water serving Cut Bank. 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 Cut Bank?
9 public water suppliers report drinking-water monitoring for Cut Bank, Montana to the EPA. Each is listed above with its population served.
What contaminants are in Cut Bank's water?
The contaminants EPA monitoring detected in Cut Bank include Nitrate-Nitrite, Fluoride, Copper, Arsenic, 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.