What was found in ZIP 99685
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 | 1189 µg/L 91% of the EPA limit 1300 µg/L Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2018 | 1/1 | SYR4 |
| Nitrate-Nitrite | 140 µg/L 1.4% of the EPA limit 10000 µg/L Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2019 | 1/1 | SYR4 |
| TTHM | 40 µg/L 50% of the EPA limit 80 µg/L Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 36.295 µg/L 60% of the EPA limit 60 µg/L Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2019 | 1/1 | SYR4 |
| Chloroform | 28.61 µg/L No EPA limit set Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2019 | 1/1 | SYR4 |
| Lead | 24.4 µg/L 163% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2018 | 1/1 | SYR4 |
| Trichloroacetic Acid | 21.05 µg/L No EPA limit set Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 21 µg/L No EPA limit set Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 17 µg/L No EPA limit set Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 9.33 µg/L No EPA limit set Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2019 | 1/1 | SYR4 |
| Barium | 6.7 µg/L 0.3% of the EPA limit 2000 µg/L Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2015 | 1/1 | SYR4 |
| Dibromochloromethane | 3.509 µg/L No EPA limit set Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2019 | 1/1 | SYR4 |
| Arsenic | 2.575 µg/L 26% of the EPA limit 10 µg/L Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2018 | 1/1 | SYR4 |
| Dibromoacetic Acid | 1.275 µg/L No EPA limit set Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2019 | 1/1 | SYR4 |
| Bromoform | 0.5090 µg/L No EPA limit set Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 0.3486 µg/L 1.2% of the EPA limit 30 µg/L Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2013 | 1/1 | SYR4 |
| Lead | 0.0031 mg/L 20% of the EPA limit 0.0150 mg/L Main supplier: UNALASKA WATER SYSTEM · 9,400 people · 2024 | 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 99685
| Supplier | State | Population served |
|---|---|---|
| UNALASKA WATER SYSTEM | AK | 9,400 |
Frequently asked questions about ZIP 99685 tap water
Is the tap water in ZIP 99685 safe to drink?
EPA testing detected 17 contaminants across the water suppliers serving ZIP 99685. 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 99685?
1 public water supplier report EPA drinking-water monitoring for ZIP 99685. Each is listed above with its population served.
What contaminants are in ZIP 99685's water?
EPA monitoring detected Copper, Nitrate-Nitrite, TTHM, Total Haloacetic Acids (HAA5), Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.