What was found in ZIP 59840
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 | 3340 µg/L 33% of the EPA limit 10000 µg/L | 2/2 | SYR4 |
| Copper | 1330 µg/L 102% of the EPA limit, in the worst sample — 1300 µg/L | 2/2 | SYR4 |
| Nitrate | 1000 µg/L 10% of the EPA limit 10000 µg/L | 1/2 | SYR4 |
| Fluoride | 200 µg/L 5% of the EPA limit 4000 µg/L | 1/2 | SYR4 |
| Lead | 153 µg/L 1020% of the EPA limit, in the worst sample — 15 µg/L | 2/2 | SYR4 |
| Barium | 50 µg/L 2.5% of the EPA limit 2000 µg/L | 1/2 | SYR4 |
| TTHM | 41 µg/L 51% of the EPA limit 80 µg/L | 2/2 | SYR4 |
| Chloroform | 36 µg/L No EPA limit set | 1/2 | SYR4 |
| Bromoform | 17.4 µg/L No EPA limit set | 1/2 | SYR4 |
| Gross Beta Particle Activity | 5.8 pCi/L No EPA limit set | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 5.6 µg/L 9.3% of the EPA limit 60 µg/L | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 4.7 pCi/L 94% of the EPA limit 5 pCi/L | 1/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.4 pCi/L 29% of the EPA limit 15 pCi/L | 2/2 | SYR4 |
| Dichloroacetic Acid | 3.9 µg/L No EPA limit set | 1/2 | SYR4 |
| Bromodichloromethane | 3.8 µg/L No EPA limit set | 1/2 | SYR4 |
| Combined Uranium | 3 µg/L 10% of the EPA limit 30 µg/L | 1/2 | SYR4 |
| Trichloroacetic Acid | 2.6 µg/L No EPA limit set | 1/2 | SYR4 |
| Chromium | 2.15 µg/L 2.2% of the EPA limit 100 µg/L | 1/2 | SYR4 |
| Arsenic | 2 µg/L 20% of the EPA limit 10 µg/L | 1/2 | SYR4 |
| Dibromochloromethane | 1.3 µg/L No EPA limit set | 1/2 | SYR4 |
| Dibromoacetic Acid | 0.5700 µg/L No EPA limit set | 1/2 | SYR4 |
| Lead | 0.0107 mg/L 72% of the EPA limit 0.0150 mg/L | 2/2 | LCR |
| PFBS | 0.0031 µg/L No EPA limit set | 1/2 | 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 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 59840
| Supplier | State | Population served |
|---|---|---|
| HAMILTON CITY OF | MT | 5,660 |
| KOHALA RANCH WATER CO. | HI | 850 |
Frequently asked questions about ZIP 59840 tap water
Is the tap water in ZIP 59840 safe to drink?
EPA testing detected 23 contaminants across the water suppliers serving ZIP 59840. 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 59840?
2 public water suppliers report EPA drinking-water monitoring for ZIP 59840. Each is listed above with its population served.
What contaminants are in ZIP 59840's water?
EPA monitoring detected Nitrate-Nitrite, Copper, Nitrate, Fluoride, Lead, and others across this ZIP's suppliers. The full list with levels and sources is above.