What was found in ZIP 99664
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 | 636 µg/L 6.4% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Copper | 152 µg/L 12% of the EPA limit 1300 µg/L | 1/1 | SYR4 |
| Lead | 19.7 µg/L 131% of the EPA limit, in the worst sample — 15 µg/L | 1/1 | SYR4 |
| TTHM | 4.13 µg/L 5.2% of the EPA limit 80 µg/L | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 2 pCi/L 40% of the EPA limit 5 pCi/L | 1/1 | SYR4 |
| Dibromochloromethane | 1.3 µg/L No EPA limit set | 1/1 | SYR4 |
| Bromodichloromethane | 1.26 µg/L No EPA limit set | 1/1 | SYR4 |
| Chloroform | 1.03 µg/L No EPA limit set | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 0.8300 pCi/L 5.5% of the EPA limit 15 pCi/L | 1/1 | SYR4 |
| Bromoform | 0.6860 µg/L No EPA limit set | 1/1 | SYR4 |
| Combined Uranium | 0.0430 µg/L 0.1% of the EPA limit 30 µg/L | 1/1 | SYR4 |
| Lead | 0.0 mg/L 0% 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 99664
| Supplier | State | Population served |
|---|---|---|
| SEWARD | AK | 3,324 |
Frequently asked questions about ZIP 99664 tap water
Is the tap water in ZIP 99664 safe to drink?
EPA testing detected 12 contaminants across the water suppliers serving ZIP 99664. 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 99664?
1 public water supplier report EPA drinking-water monitoring for ZIP 99664. Each is listed above with its population served.
What contaminants are in ZIP 99664's water?
EPA monitoring detected Nitrate-Nitrite, Copper, Lead, TTHM, Combined Radium (-226 And -228), and others across this ZIP's suppliers. The full list with levels and sources is above.