What was found in Girdwood's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 495 µg/L 5% of the EPA limit 10000 µg/L Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2019
Highest in the city: 995 µg/L — ALYESKA CREEKSIDE APARTMENTS · 60 people · 2019 | 4/4 | SYR4 |
| Copper | 522.9 µg/L 40% of the EPA limit 1300 µg/L Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2018
Highest in the city: 669.35 µg/L — GLACIER VALLEY WATER COMPANY · 120 people · 2017 | 4/4 | SYR4 |
| Nitrate | 462 µg/L 4.6% of the EPA limit 10000 µg/L Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2019
Highest in the city: 638 µg/L — ALYESKA CREEKSIDE APARTMENTS · 60 people · 2017 | 4/4 | SYR4 |
| Fluoride | 627.5 µg/L 16% of the EPA limit 4000 µg/L Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2019 | 1/4 | SYR4 |
| Barium | 48.5 µg/L 2.4% of the EPA limit 2000 µg/L Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2018 | 3/4 | SYR4 |
| Monochloroacetic Acid | 16.0985 µg/L No EPA limit set Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2019 | 1/4 | SYR4 |
| TTHM | 9.4275 µg/L 12% of the EPA limit 80 µg/L Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2019 | 1/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 7.135 µg/L 12% of the EPA limit 60 µg/L Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2019 | 1/4 | SYR4 |
| Dichloroacetic Acid | 4.12 µg/L No EPA limit set Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2019 | 1/4 | SYR4 |
| Lead | 3.1505 µg/L 21% of the EPA limit 15 µg/L Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2019
Highest in the city: 4.04 µg/L — ALYESKA CHALET CONDOS HOA · 60 people · 2018 | 3/4 | SYR4 |
| Chloroform | 3.551 µg/L No EPA limit set Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2019 | 1/4 | SYR4 |
| Bromodichloromethane | 3.215 µg/L No EPA limit set Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2019 | 1/4 | SYR4 |
| Dibromochloromethane | 2.6525 µg/L No EPA limit set Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2019 | 1/4 | SYR4 |
| Trichloroacetic Acid | 2.44 µg/L No EPA limit set Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2019 | 1/4 | SYR4 |
| Chromium | 2.1571 µg/L 2.2% of the EPA limit 100 µg/L Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2018 | 1/4 | SYR4 |
| Dibromoacetic Acid | 2.15 µg/L No EPA limit set Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2019 | 1/4 | SYR4 |
| Bromoform | 1.375 µg/L No EPA limit set Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2019 | 1/4 | SYR4 |
| Selenium | 0.7229 µg/L 1.4% of the EPA limit 50 µg/L Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2018 | 1/4 | SYR4 |
| Arsenic | 0.4452 µg/L 4.5% of the EPA limit 10 µg/L Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2018
Highest in the city: 0.5870 µg/L — ALYESKA CREEKSIDE APARTMENTS · 60 people · 2019 | 3/4 | SYR4 |
| Antimony, Total | 0.1266 µg/L 2.1% of the EPA limit 6 µg/L Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2018 | 1/4 | SYR4 |
| Lead | 0.0028 mg/L 19% of the EPA limit 0.0150 mg/L Main supplier: GIRDWOOD WATER SYSTEM · 2,625 people · 2024
Highest in the city: 0.0035 mg/L — GLACIER VALLEY WATER COMPANY · 120 people · 2023 | 4/4 | 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.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Girdwood
| Supplier | Population served |
|---|---|
| GIRDWOOD WATER SYSTEM | 2,625 |
| GLACIER VALLEY WATER COMPANY | 120 |
| ALYESKA CHALET CONDOS HOA | 60 |
| ALYESKA CREEKSIDE APARTMENTS | 60 |
Frequently asked questions about Girdwood tap water
Is Girdwood tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Girdwood. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Girdwood?
4 public water suppliers report drinking-water monitoring for Girdwood, Alaska to the EPA. Each is listed above with its population served.
What contaminants are in Girdwood's water?
The contaminants EPA monitoring detected in Girdwood include Nitrate-Nitrite, Copper, Nitrate, Fluoride, Barium. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.