What was found in Belgrade'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 | 2780 µg/L 28% of the EPA limit 10000 µg/L Main supplier: BELGRADE CITY OF · 10,460 people · 2019
Highest in the city: 4780 µg/L — BELGRADE TRAILER COURT · 50 people · 2019 | 8/9 | SYR4 |
| Copper | 275.85 µg/L 21% of the EPA limit 1300 µg/L Main supplier: BELGRADE CITY OF · 10,460 people · 2019
Highest in the city: 441.25 µg/L — WYLIE CREEK ESTATES SUBDIVISION · 400 people · 2017 | 9/9 | SYR4 |
| Fluoride | 100 µg/L 2.5% of the EPA limit 4000 µg/L Main supplier: BELGRADE CITY OF · 10,460 people · 2018
Highest in the city: 254.4 µg/L — RIVER ROCK COUNTY WATER AND SEWER DIST · 4,200 people · 2019 | 7/9 | SYR4 |
| Barium | 150 µg/L 7.5% of the EPA limit 2000 µg/L Main supplier: BELGRADE CITY OF · 10,460 people · 2018
Highest in the city: 210 µg/L — BELGRADE TRAILER COURT · 50 people · 2019 | 7/9 | SYR4 |
| Lead | 4.35 µg/L 29% of the EPA limit 15 µg/L Main supplier: BELGRADE CITY OF · 10,460 people · 2019
Highest in the city: 29.9 µg/L — BELGRADE TRAILER COURT · 50 people · 2019 | 9/9 | SYR4 |
| TTHM | 27.675 µg/L 35% of the EPA limit 80 µg/L Highest in the city: RIVER ROCK COUNTY WATER AND SEWER DIST · 4,200 people · 2018 | 1/9 | SYR4 |
| Chloroform | 24.0665 µg/L No EPA limit set Highest in the city: RIVER ROCK COUNTY WATER AND SEWER DIST · 4,200 people · 2018 | 1/9 | SYR4 |
| Gross Alpha, Excl. Radon And U | 8.225 pCi/L 55% of the EPA limit 15 pCi/L Main supplier: BELGRADE CITY OF · 10,460 people · 2017
Highest in the city: 16.555 pCi/L — LEXLEY ACRES MOBILE HOME PARK · 250 people · 2019 | 6/9 | SYR4 |
| Combined Uranium | 4.45 µg/L 15% of the EPA limit 30 µg/L Main supplier: BELGRADE CITY OF · 10,460 people · 2017
Highest in the city: 6 µg/L — WYLIE CREEK ESTATES SUBDIVISION · 400 people · 2015 | 8/9 | SYR4 |
| Bromodichloromethane | 3.5 µg/L No EPA limit set Highest in the city: RIVER ROCK COUNTY WATER AND SEWER DIST · 4,200 people · 2018 | 1/9 | SYR4 |
| Dibromochloromethane | 2.6 µg/L No EPA limit set Highest in the city: RIVER ROCK COUNTY WATER AND SEWER DIST · 4,200 people · 2018 | 1/9 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 2.5 µg/L 42% of the EPA limit 6 µg/L Highest in the city: SPRINGVALE SUBDIVISION · 150 people · 2018 | 1/9 | SYR4 |
| Bromoform | 2.2 µg/L No EPA limit set Highest in the city: RIVER ROCK COUNTY WATER AND SEWER DIST · 4,200 people · 2018 | 1/9 | SYR4 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L Highest in the city: LEXLEY ACRES MOBILE HOME PARK · 250 people · 2019 | 1/9 | SYR4 |
| Combined Radium (-226 And -228) | 1.08 pCi/L 22% of the EPA limit 5 pCi/L Main supplier: BELGRADE CITY OF · 10,460 people · 2017
Highest in the city: 1.99 pCi/L — LEXLEY ACRES MOBILE HOME PARK · 250 people · 2016 | 2/9 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L Main supplier: BELGRADE CITY OF · 10,460 people · 2018
Highest in the city: 1.85 µg/L — LEXLEY ACRES MOBILE HOME PARK · 250 people · 2019 | 2/9 | SYR4 |
| Thallium, Total | 0.9000 µg/L 45% of the EPA limit 2 µg/L Highest in the city: POTTS TRAILER COURT BELGRADE · 50 people · 2017 | 1/9 | SYR4 |
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L Main supplier: BELGRADE CITY OF · 10,460 people · 2025
Highest in the city: 0.0028 mg/L — RIVER ROCK COUNTY WATER AND SEWER DIST · 4,200 people · 2027 | 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 Belgrade
| Supplier | Population served |
|---|---|
| BELGRADE CITY OF | 10,460 |
| RIVER ROCK COUNTY WATER AND SEWER DIST | 4,200 |
| WYLIE CREEK ESTATES SUBDIVISION | 400 |
| LEXLEY ACRES MOBILE HOME PARK | 250 |
| SPRINGVALE SUBDIVISION | 150 |
| STANS GARDEN | 100 |
| THOMSON MOBILE HOME PARK | 65 |
| BELGRADE TRAILER COURT | 50 |
| POTTS TRAILER COURT BELGRADE | 50 |
Frequently asked questions about Belgrade tap water
Is Belgrade tap water safe to drink?
EPA testing detected 18 contaminants in the water serving Belgrade. 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 Belgrade?
9 public water suppliers report drinking-water monitoring for Belgrade, Montana to the EPA. Each is listed above with its population served.
What contaminants are in Belgrade's water?
The contaminants EPA monitoring detected in Belgrade include Nitrate-Nitrite, Copper, Fluoride, Barium, Lead. 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.