What was found in ZIP 59104
The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 620 µg/L 6.2% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Fluoride | 600 µg/L 15% of the EPA limit 4000 µg/L | 1/1 | SYR4 |
| Copper | 457 µg/L 35% of the EPA limit 1300 µg/L | 1/1 | SYR4 |
| Nitrate | 390 µg/L 3.9% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Lead | 87 µg/L 580% of the EPA limit, in the worst sample — 15 µg/L | 1/1 | SYR4 |
| TTHM | 85 µg/L 106% of the EPA limit, in the worst sample — 80 µg/L | 1/1 | SYR4 |
| Chloroform | 77.1 µg/L No EPA limit set | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 77 µg/L 128% of the EPA limit, in the worst sample — 60 µg/L | 1/1 | SYR4 |
| Barium | 60 µg/L 3% of the EPA limit 2000 µg/L | 1/1 | SYR4 |
| Lithium | 57 µg/L No EPA limit set | 1/1 | UCMR-5 |
| Trichloroacetic Acid | 48.1 µg/L No EPA limit set | 1/1 | SYR4 |
| Dichloroacetic Acid | 37 µg/L No EPA limit set | 1/1 | SYR4 |
| Bromodichloromethane | 14 µg/L No EPA limit set | 1/1 | SYR4 |
| Arsenic | 9 µg/L 90% of the EPA limit 10 µg/L | 1/1 | SYR4 |
| Dibromochloromethane | 5.5 µg/L No EPA limit set | 1/1 | SYR4 |
| Monochloroacetic Acid | 5.4 µg/L No EPA limit set | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.2 µg/L No EPA limit set | 1/1 | SYR4 |
| Selenium | 1 µg/L 2% of the EPA limit 50 µg/L | 1/1 | SYR4 |
| Dibromoacetic Acid | 0.8500 µg/L No EPA limit set | 1/1 | SYR4 |
| Lead | 0.0050 mg/L 33% of the EPA limit 0.0150 mg/L | 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 single worst sample on
record — over 100% is worth reading, but is not by itself a violation.
Formal violations are listed separately.
Water suppliers serving ZIP 59104
| Supplier | State | Population served |
|---|---|---|
| BILLINGS CITY OF | MT | 114,000 |
Frequently asked questions about ZIP 59104 tap water
Is the tap water in ZIP 59104 safe to drink?
EPA testing detected 20 contaminants across the water suppliers serving ZIP 59104. 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 59104?
1 public water supplier report EPA drinking-water monitoring for ZIP 59104. Each is listed above with its population served.
What contaminants are in ZIP 59104's water?
EPA monitoring detected Nitrate-Nitrite, Fluoride, Copper, Nitrate, Lead, and others across this ZIP's suppliers. The full list with levels and sources is above.