What was found in ZIP 99775
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 | 124 µg/L 9.5% of the EPA limit 1300 µg/L Main supplier: GOLDEN HEART UTILITIES · 78,324 people · 2019
Highest in the ZIP: 1100 µg/L — UNIVERSITY OF ALASKA - FAIRBANKS · 6,200 people · 2019 | 3/3 | SYR4 |
| TTHM | 65.75 µg/L 82% of the EPA limit 80 µg/L Main supplier: GOLDEN HEART UTILITIES · 78,324 people · 2019
Highest in the ZIP: 111.075 µg/L — UNIVERSITY OF ALASKA - FAIRBANKS · 6,200 people · 2019 | 3/3 | SYR4 |
| Chloroform | 61.47 µg/L No EPA limit set Main supplier: GOLDEN HEART UTILITIES · 78,324 people · 2019
Highest in the ZIP: 92.3 µg/L — UNIVERSITY OF ALASKA - FAIRBANKS · 6,200 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 36.975 µg/L 62% of the EPA limit 60 µg/L Main supplier: GOLDEN HEART UTILITIES · 78,324 people · 2019
Highest in the ZIP: 56.4 µg/L — UNIVERSITY OF ALASKA - FAIRBANKS · 6,200 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 19.3 µg/L No EPA limit set Main supplier: GOLDEN HEART UTILITIES · 78,324 people · 2019
Highest in the ZIP: 31.85 µg/L — UNIVERSITY OF ALASKA - FAIRBANKS · 6,200 people · 2019 | 3/3 | SYR4 |
| Lead | 19.25 µg/L 128% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: GOLDEN HEART UTILITIES · 78,324 people · 2019
Highest in the ZIP: 29.3 µg/L — UNIVERSITY OF ALASKA - FAIRBANKS · 6,200 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 17.225 µg/L No EPA limit set Main supplier: GOLDEN HEART UTILITIES · 78,324 people · 2019
Highest in the ZIP: 27 µg/L — UNIVERSITY OF ALASKA - FAIRBANKS · 6,200 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 4.773 µg/L No EPA limit set Main supplier: GOLDEN HEART UTILITIES · 78,324 people · 2019
Highest in the ZIP: 16 µg/L — UNIVERSITY OF ALASKA - FAIRBANKS · 6,200 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 1.646 µg/L No EPA limit set Highest in the ZIP: UNIVERSITY OF ALASKA - FAIRBANKS · 6,200 people · 2019 | 1/3 | SYR4 |
| PFHXS | 0.0088 µg/L No EPA limit set Main supplier: GOLDEN HEART UTILITIES · 78,324 people · 2025
Highest in the ZIP: 0.0105 µg/L — COLLEGE UTILITIES CORPORATION · 27,000 people · 2024 | 3/3 | UCMR-5 |
| PFOA | 0.0054 µg/L No EPA limit set Main supplier: GOLDEN HEART UTILITIES · 78,324 people · 2025
Highest in the ZIP: 0.0064 µg/L — COLLEGE UTILITIES CORPORATION · 27,000 people · 2024 | 2/3 | UCMR-5 |
| Pfhxa | 0.0037 µg/L No EPA limit set Main supplier: GOLDEN HEART UTILITIES · 78,324 people · 2025
Highest in the ZIP: 0.0043 µg/L — COLLEGE UTILITIES CORPORATION · 27,000 people · 2024 | 3/3 | UCMR-5 |
| Pfpea | 0.0033 µg/L No EPA limit set Main supplier: GOLDEN HEART UTILITIES · 78,324 people · 2025
Highest in the ZIP: 0.0039 µg/L — COLLEGE UTILITIES CORPORATION · 27,000 people · 2024 | 2/3 | UCMR-5 |
| Lead | 0.0024 mg/L 16% of the EPA limit 0.0150 mg/L Main supplier: GOLDEN HEART UTILITIES · 78,324 people · 2025 | 3/3 | 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 99775
| Supplier | State | Population served |
|---|---|---|
| GOLDEN HEART UTILITIES | AK | 78,324 |
| COLLEGE UTILITIES CORPORATION | AK | 27,000 |
| UNIVERSITY OF ALASKA - FAIRBANKS | AK | 6,200 |
Frequently asked questions about ZIP 99775 tap water
Is the tap water in ZIP 99775 safe to drink?
EPA testing detected 14 contaminants across the water suppliers serving ZIP 99775. 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 99775?
3 public water suppliers report EPA drinking-water monitoring for ZIP 99775. Each is listed above with its population served.
What contaminants are in ZIP 99775's water?
EPA monitoring detected Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5), Trichloroacetic Acid, and others across this ZIP's suppliers. The full list with levels and sources is above.