What was found in ZIP 59716
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 3045 µg/L 30% of the EPA limit 10000 µg/L Main supplier: BIG SKY COUNTY WATER AND SEWER DIST 363 · 4,132 people · 2019 | 1/1 | SYR4 |
| Fluoride | 680 µg/L 17% of the EPA limit 4000 µg/L Main supplier: BIG SKY COUNTY WATER AND SEWER DIST 363 · 4,132 people · 2019 | 1/1 | SYR4 |
| Barium | 205 µg/L 10% of the EPA limit 2000 µg/L Main supplier: BIG SKY COUNTY WATER AND SEWER DIST 363 · 4,132 people · 2019 | 1/1 | SYR4 |
| Copper | 186.75 µg/L 14% of the EPA limit 1300 µg/L Main supplier: BIG SKY COUNTY WATER AND SEWER DIST 363 · 4,132 people · 2019 | 1/1 | SYR4 |
| Arsenic | 18.45 µg/L 185% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: BIG SKY COUNTY WATER AND SEWER DIST 363 · 4,132 people · 2019 | 1/1 | SYR4 |
| Lead | 10.95 µg/L 73% of the EPA limit 15 µg/L Main supplier: BIG SKY COUNTY WATER AND SEWER DIST 363 · 4,132 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6.1 pCi/L 41% of the EPA limit 15 pCi/L Main supplier: BIG SKY COUNTY WATER AND SEWER DIST 363 · 4,132 people · 2013 | 1/1 | SYR4 |
| Antimony, Total | 2.95 µg/L 49% of the EPA limit 6 µg/L Main supplier: BIG SKY COUNTY WATER AND SEWER DIST 363 · 4,132 people · 2019 | 1/1 | SYR4 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L Main supplier: BIG SKY COUNTY WATER AND SEWER DIST 363 · 4,132 people · 2019 | 1/1 | SYR4 |
| Xylenes, Total | 1.1 µg/L 0% of the EPA limit 10000 µg/L Main supplier: BIG SKY COUNTY WATER AND SEWER DIST 363 · 4,132 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 1 µg/L 3.3% of the EPA limit 30 µg/L Main supplier: BIG SKY COUNTY WATER AND SEWER DIST 363 · 4,132 people · 2013 | 1/1 | SYR4 |
| Lead | 0.0048 mg/L 32% of the EPA limit 0.0150 mg/L Main supplier: BIG SKY COUNTY WATER AND SEWER DIST 363 · 4,132 people · 2025 | 1/1 | LCR |
| PFBS | 0.0031 µg/L No EPA limit set Main supplier: BIG SKY COUNTY WATER AND SEWER DIST 363 · 4,132 people · 2025 | 1/1 | UCMR-5 |
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.
Water suppliers serving ZIP 59716
| Supplier | State | Population served |
|---|---|---|
| BIG SKY COUNTY WATER AND SEWER DIST 363 | MT | 4,132 |
Frequently asked questions about ZIP 59716 tap water
Is the tap water in ZIP 59716 safe to drink?
EPA testing detected 13 contaminants across the water suppliers serving ZIP 59716. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 59716?
1 public water supplier report EPA drinking-water monitoring for ZIP 59716. Each is listed above with its population served.
What contaminants are in ZIP 59716's water?
EPA monitoring detected Nitrate-Nitrite, Fluoride, Barium, Copper, Arsenic, and others across this ZIP's suppliers. The full list with levels and sources is above.