What was found in ZIP 59923
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 |
|---|---|---|---|
| Copper | 320 µg/L 25% of the EPA limit 1300 µg/L Main supplier: LIBBY CITY OF · 4,892 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 46.5 µg/L 0.5% of the EPA limit 10000 µg/L Main supplier: LIBBY CITY OF · 4,892 people · 2019 | 1/1 | SYR4 |
| Nitrate | 30 µg/L 0.3% of the EPA limit 10000 µg/L Main supplier: LIBBY CITY OF · 4,892 people · 2013 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 27.1 µg/L 45% of the EPA limit 60 µg/L Main supplier: LIBBY CITY OF · 4,892 people · 2019 | 1/1 | SYR4 |
| TTHM | 23.65 µg/L 30% of the EPA limit 80 µg/L Main supplier: LIBBY CITY OF · 4,892 people · 2019 | 1/1 | SYR4 |
| Chloroform | 22.65 µg/L No EPA limit set Main supplier: LIBBY CITY OF · 4,892 people · 2019 | 1/1 | SYR4 |
| Fluoride | 20 µg/L 0.5% of the EPA limit 4000 µg/L Main supplier: LIBBY CITY OF · 4,892 people · 2013 | 1/1 | SYR4 |
| Trichloroacetic Acid | 17 µg/L No EPA limit set Main supplier: LIBBY CITY OF · 4,892 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 10.05 µg/L No EPA limit set Main supplier: LIBBY CITY OF · 4,892 people · 2019 | 1/1 | SYR4 |
| Lead | 6.55 µg/L 44% of the EPA limit 15 µg/L Main supplier: LIBBY CITY OF · 4,892 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.1 pCi/L 14% of the EPA limit 15 pCi/L Main supplier: LIBBY CITY OF · 4,892 people · 2013 | 1/1 | SYR4 |
| Monochloroacetic Acid | 1.55 µg/L No EPA limit set Main supplier: LIBBY CITY OF · 4,892 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 1.17 µg/L No EPA limit set Main supplier: LIBBY CITY OF · 4,892 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: LIBBY CITY OF · 4,892 people · 2025 | 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 59923
| Supplier | State | Population served |
|---|---|---|
| LIBBY CITY OF | MT | 4,892 |
Frequently asked questions about ZIP 59923 tap water
Is the tap water in ZIP 59923 safe to drink?
EPA testing detected 14 contaminants across the water suppliers serving ZIP 59923. 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 59923?
1 public water supplier report EPA drinking-water monitoring for ZIP 59923. Each is listed above with its population served.
What contaminants are in ZIP 59923's water?
EPA monitoring detected Copper, Nitrate-Nitrite, Nitrate, Total Haloacetic Acids (HAA5), TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.