What was found in ZIP 59758
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 |
|---|---|---|---|
| Fluoride | 3502.5 µg/L 88% of the EPA limit 4000 µg/L Main supplier: WEST YELLOWSTONE TOWN OF · 9,899 people · 2019 | 1/1 | SYR4 |
| Copper | 330.2 µg/L 25% of the EPA limit 1300 µg/L Main supplier: WEST YELLOWSTONE TOWN OF · 9,899 people · 2018 | 1/1 | SYR4 |
| Nitrate-Nitrite | 166.25 µg/L 1.7% of the EPA limit 10000 µg/L Main supplier: WEST YELLOWSTONE TOWN OF · 9,899 people · 2019 | 1/1 | SYR4 |
| Lithium | 70 µg/L No EPA limit set Main supplier: WEST YELLOWSTONE TOWN OF · 9,899 people · 2024 | 1/1 | UCMR-5 |
| Lead | 7.545 µg/L 50% of the EPA limit 15 µg/L Main supplier: WEST YELLOWSTONE TOWN OF · 9,899 people · 2018 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 2.67 pCi/L 53% of the EPA limit 5 pCi/L Main supplier: WEST YELLOWSTONE TOWN OF · 9,899 people · 2017 | 1/1 | SYR4 |
| Selenium | 2.59 µg/L 5.2% of the EPA limit 50 µg/L Main supplier: WEST YELLOWSTONE TOWN OF · 9,899 people · 2018 | 1/1 | SYR4 |
| Arsenic | 2.495 µg/L 25% of the EPA limit 10 µg/L Main supplier: WEST YELLOWSTONE TOWN OF · 9,899 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.8 pCi/L 12% of the EPA limit 15 pCi/L Main supplier: WEST YELLOWSTONE TOWN OF · 9,899 people · 2017 | 1/1 | SYR4 |
| Barium | 1.105 µg/L 0.1% of the EPA limit 2000 µg/L Main supplier: WEST YELLOWSTONE TOWN OF · 9,899 people · 2018 | 1/1 | SYR4 |
| Antimony, Total | 0.3780 µg/L 6.3% of the EPA limit 6 µg/L Main supplier: WEST YELLOWSTONE TOWN OF · 9,899 people · 2018 | 1/1 | SYR4 |
| Mercury | 0.0176 µg/L 0.9% of the EPA limit 2 µg/L Main supplier: WEST YELLOWSTONE TOWN OF · 9,899 people · 2018 | 1/1 | SYR4 |
| Lead | 0.0013 mg/L 8.3% of the EPA limit 0.0150 mg/L Main supplier: WEST YELLOWSTONE TOWN OF · 9,899 people · 2024 | 1/1 | 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.
Water suppliers serving ZIP 59758
| Supplier | State | Population served |
|---|---|---|
| WEST YELLOWSTONE TOWN OF | MT | 9,899 |
Frequently asked questions about ZIP 59758 tap water
Is the tap water in ZIP 59758 safe to drink?
EPA testing detected 13 contaminants across the water suppliers serving ZIP 59758. 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 59758?
1 public water supplier report EPA drinking-water monitoring for ZIP 59758. Each is listed above with its population served.
What contaminants are in ZIP 59758's water?
EPA monitoring detected Fluoride, Copper, Nitrate-Nitrite, Lithium, Lead, and others across this ZIP's suppliers. The full list with levels and sources is above.