What was found in Miles City'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 | 1100 µg/L 28% of the EPA limit 4000 µg/L Main supplier: MILES CITY CITY OF · 9,565 people · 2019 | 1/4 | SYR4 |
| Nitrate-Nitrite | 520 µg/L 5.2% of the EPA limit 10000 µg/L Main supplier: MILES CITY CITY OF · 9,565 people · 2019 | 1/4 | SYR4 |
| Copper | 163 µg/L 13% of the EPA limit 1300 µg/L Main supplier: MILES CITY CITY OF · 9,565 people · 2019
Highest in the city: 478 µg/L — PALISADES APARTMENTS · 50 people · 2018 | 4/4 | SYR4 |
| TTHM | 76.7 µg/L 96% of the EPA limit 80 µg/L Main supplier: MILES CITY CITY OF · 9,565 people · 2019
Highest in the city: 77.2 µg/L — PINE HILLS YOUTH CORRECT FACIL · 193 people · 2019 | 3/4 | SYR4 |
| Chloroform | 60.7 µg/L No EPA limit set Main supplier: MILES CITY CITY OF · 9,565 people · 2019
Highest in the city: 61.6 µg/L — PINE HILLS YOUTH CORRECT FACIL · 193 people · 2019 | 3/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 50.2 µg/L 84% of the EPA limit 60 µg/L Main supplier: MILES CITY CITY OF · 9,565 people · 2019
Highest in the city: 54 µg/L — PINE HILLS YOUTH CORRECT FACIL · 193 people · 2019 | 3/4 | SYR4 |
| Lithium | 46.4 µg/L No EPA limit set Main supplier: MILES CITY CITY OF · 9,565 people · 2025 | 1/4 | UCMR-5 |
| Lead | 5 µg/L 33% of the EPA limit 15 µg/L Main supplier: MILES CITY CITY OF · 9,565 people · 2019
Highest in the city: 30.5 µg/L — PALISADES APARTMENTS · 50 people · 2018 | 4/4 | SYR4 |
| Trichloroacetic Acid | 27.1 µg/L No EPA limit set Main supplier: MILES CITY CITY OF · 9,565 people · 2019 | 3/4 | SYR4 |
| Dichloroacetic Acid | 22.4 µg/L No EPA limit set Main supplier: MILES CITY CITY OF · 9,565 people · 2019
Highest in the city: 25 µg/L — PINE HILLS YOUTH CORRECT FACIL · 193 people · 2019 | 3/4 | SYR4 |
| Bromodichloromethane | 15 µg/L No EPA limit set Main supplier: MILES CITY CITY OF · 9,565 people · 2019
Highest in the city: 18.25 µg/L — CUSTER CO WATER AND SEWER DIST · 480 people · 2019 | 3/4 | SYR4 |
| Arsenic | 5.65 µg/L 57% of the EPA limit 10 µg/L Main supplier: MILES CITY CITY OF · 9,565 people · 2019 | 1/4 | SYR4 |
| Dibromochloromethane | 3.9 µg/L No EPA limit set Main supplier: MILES CITY CITY OF · 9,565 people · 2019
Highest in the city: 4.125 µg/L — CUSTER CO WATER AND SEWER DIST · 480 people · 2019 | 3/4 | SYR4 |
| Monochloroacetic Acid | 3.58 µg/L No EPA limit set Main supplier: MILES CITY CITY OF · 9,565 people · 2019 | 3/4 | SYR4 |
| Combined Uranium | 3 µg/L 10% of the EPA limit 30 µg/L Main supplier: MILES CITY CITY OF · 9,565 people · 2017 | 1/4 | SYR4 |
| Xylenes, Total | 1.5 µg/L 0% of the EPA limit 10000 µg/L Main supplier: MILES CITY CITY OF · 9,565 people · 2019 | 1/4 | SYR4 |
| Monobromoacetic Acid | 1.22 µg/L No EPA limit set Main supplier: MILES CITY CITY OF · 9,565 people · 2019 | 1/4 | SYR4 |
| Dibromoacetic Acid | 0.8640 µg/L No EPA limit set Main supplier: MILES CITY CITY OF · 9,565 people · 2019 | 3/4 | SYR4 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L Main supplier: MILES CITY CITY OF · 9,565 people · 2025 | 4/4 | LCR |
Water suppliers serving Miles City
| Supplier | Population served |
|---|---|
| MILES CITY CITY OF | 9,565 |
| CUSTER CO WATER AND SEWER DIST | 480 |
| PINE HILLS YOUTH CORRECT FACIL | 193 |
| PALISADES APARTMENTS | 50 |
Frequently asked questions about Miles City tap water
Is Miles City tap water safe to drink?
EPA testing detected 19 contaminants in the water serving Miles City. 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 Miles City?
4 public water suppliers report drinking-water monitoring for Miles City, Montana to the EPA. Each is listed above with its population served.
What contaminants are in Miles City's water?
The contaminants EPA monitoring detected in Miles City include Fluoride, Nitrate-Nitrite, Copper, 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.