What was found in Hooper Bay'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 |
|---|---|---|---|
| Copper | 1470 µg/L 113% of the EPA limit, at the 95th percentile of samples — 1300 µg/L Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Fluoride | 422 µg/L 11% of the EPA limit 4000 µg/L Main supplier: CITY OF HOOPER BAY · 1,200 people · 2018 | 1/1 | SYR4 |
| Nitrate-Nitrite | 257.8 µg/L 2.6% of the EPA limit 10000 µg/L Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Barium | 57 µg/L 2.9% of the EPA limit 2000 µg/L Main supplier: CITY OF HOOPER BAY · 1,200 people · 2018 | 1/1 | SYR4 |
| TTHM | 47.65 µg/L 60% of the EPA limit 80 µg/L Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 39.22 µg/L 65% of the EPA limit 60 µg/L Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 35.53 µg/L No EPA limit set Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Lead | 26.385 µg/L 176% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 15.55 µg/L No EPA limit set Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Arsenic | 13.95 µg/L 140% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 11.55 µg/L No EPA limit set Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Bromoform | 11 µg/L No EPA limit set Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Chloroform | 9.61 µg/L No EPA limit set Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 8.76 µg/L No EPA limit set Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 6.675 µg/L No EPA limit set Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 6.65 µg/L No EPA limit set Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 2.82 µg/L No EPA limit set Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Toluene | 0.5900 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: CITY OF HOOPER BAY · 1,200 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0014 mg/L 9.3% of the EPA limit 0.0150 mg/L Main supplier: CITY OF HOOPER BAY · 1,200 people · 2021 | 1/1 | LCR |
Water suppliers serving Hooper Bay
| Supplier | Population served |
|---|---|
| CITY OF HOOPER BAY | 1,200 |
Frequently asked questions about Hooper Bay tap water
Is Hooper Bay tap water safe to drink?
EPA testing detected 19 contaminants in the water serving Hooper Bay. 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 Hooper Bay?
1 public water supplier report drinking-water monitoring for Hooper Bay, Alaska to the EPA. Each is listed above with its population served.
What contaminants are in Hooper Bay's water?
The contaminants EPA monitoring detected in Hooper Bay include Copper, Fluoride, Nitrate-Nitrite, Barium, TTHM. 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.