What was found in ZIP 59602
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 | 1580 µg/L 16% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Copper | 1060 µg/L 82% of the EPA limit 1300 µg/L | 1/1 | SYR4 |
| Fluoride | 800 µg/L 20% of the EPA limit 4000 µg/L | 1/1 | SYR4 |
| Oxamyl | 200 µg/L 100% of the EPA limit 200 µg/L | 1/1 | SYR4 |
| TTHM | 99 µg/L 124% of the EPA limit, in the worst sample — 80 µg/L | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 92 µg/L 153% of the EPA limit, in the worst sample — 60 µg/L | 1/1 | SYR4 |
| Chloroform | 91 µg/L No EPA limit set | 1/1 | SYR4 |
| Lithium | 78 µg/L No EPA limit set | 1/1 | UCMR-5 |
| Dichloroacetic Acid | 49 µg/L No EPA limit set | 1/1 | SYR4 |
| Carbofuran | 40 µg/L 100% of the EPA limit 40 µg/L | 1/1 | SYR4 |
| Trichloroacetic Acid | 40 µg/L No EPA limit set | 1/1 | SYR4 |
| Arsenic | 31 µg/L 310% of the EPA limit, in the worst sample — 10 µg/L | 1/1 | SYR4 |
| Lead | 19 µg/L 127% of the EPA limit, in the worst sample — 15 µg/L | 1/1 | SYR4 |
| Bromodichloromethane | 12 µg/L No EPA limit set | 1/1 | SYR4 |
| Monochloroacetic Acid | 8.3 µg/L No EPA limit set | 1/1 | SYR4 |
| Dibromochloromethane | 3.6 µg/L No EPA limit set | 1/1 | SYR4 |
| Combined Uranium | 3 µg/L 10% of the EPA limit 30 µg/L | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.2 pCi/L 15% of the EPA limit 15 pCi/L | 1/1 | SYR4 |
| Cadmium | 2 µg/L 40% of the EPA limit 5 µg/L | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.9 µg/L No EPA limit set | 1/1 | SYR4 |
| Bromoform | 1.2 µg/L No EPA limit set | 1/1 | SYR4 |
| Dibromoacetic Acid | 1.2 µg/L No EPA limit set | 1/1 | SYR4 |
| trans-1,2-Dichloroethylene | 0.5700 µg/L 0.6% of the EPA limit 100 µg/L | 1/1 | SYR4 |
| Lead | 0.0030 mg/L 20% 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 59602
| Supplier | State | Population served |
|---|---|---|
| HELENA WATER SYSTEM | MT | 32,091 |
Frequently asked questions about ZIP 59602 tap water
Is the tap water in ZIP 59602 safe to drink?
EPA testing detected 24 contaminants across the water suppliers serving ZIP 59602. 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 59602?
1 public water supplier report EPA drinking-water monitoring for ZIP 59602. Each is listed above with its population served.
What contaminants are in ZIP 59602's water?
EPA monitoring detected Nitrate-Nitrite, Copper, Fluoride, Oxamyl, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.