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Tap water quality report

Kodiak, AK

EPA monitoring detected 18 contaminants across the 2 water suppliers serving Kodiak. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
12,639
people served
18
contaminants found
Alaska rankings Lead in Alaska PFAS in Alaska

What was found in Kodiak'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.

ContaminantLevel vs EPA limitSuppliersSource
Copper
677 µg/L 52%
of the EPA limit 1300 µg/L
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2019
2/2 SYR4
Nitrate-Nitrite
256 µg/L 2.6%
of the EPA limit 10000 µg/L
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2019
Highest in the city: 593.45 µg/L — USCG STATION KODIAK · 3,092 people · 2019
2/2 SYR4
Nitrate
188 µg/L 1.9%
of the EPA limit 10000 µg/L
Highest in the city: USCG STATION KODIAK · 3,092 people · 2014
1/2 SYR4
TTHM
75.335 µg/L 94%
of the EPA limit 80 µg/L
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2019
2/2 SYR4
Chloroform
65.8 µg/L
No EPA limit set
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
57.8 µg/L 96%
of the EPA limit 60 µg/L
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2019
2/2 SYR4
Trichloroacetic Acid
33.7 µg/L
No EPA limit set
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2019
2/2 SYR4
Dichloroacetic Acid
24.85 µg/L
No EPA limit set
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2019
2/2 SYR4
Dibromoacetic Acid
12.8 µg/L
No EPA limit set
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2019
1/2 SYR4
Lead
8.51 µg/L 57%
of the EPA limit 15 µg/L
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2019
Highest in the city: 12.59 µg/L — USCG STATION KODIAK · 3,092 people · 2019
2/2 SYR4
Bromodichloromethane
11.72 µg/L
No EPA limit set
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2019
2/2 SYR4
Barium
3.12 µg/L 0.2%
of the EPA limit 2000 µg/L
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2014
Highest in the city: 11.22 µg/L — USCG STATION KODIAK · 3,092 people · 2019
2/2 SYR4
Monochloroacetic Acid
5.91 µg/L
No EPA limit set
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2019
1/2 SYR4
Monobromoacetic Acid
1.3 µg/L
No EPA limit set
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2019
Highest in the city: 4.8 µg/L — USCG STATION KODIAK · 3,092 people · 2019
2/2 SYR4
Dibromochloromethane
2.2785 µg/L
No EPA limit set
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2019
2/2 SYR4
Combined Radium (-226 And -228)
1.6 pCi/L 32%
of the EPA limit 5 pCi/L
Highest in the city: USCG STATION KODIAK · 3,092 people · 2019
1/2 SYR4
Arsenic
0.1880 µg/L 1.9%
of the EPA limit 10 µg/L
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2012
1/2 SYR4
Lead
0.0039 mg/L 26%
of the EPA limit 0.0150 mg/L
Main supplier: KODIAK WATER SYSTEM · 9,547 people · 2025
2/2 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 Kodiak

SupplierPopulation served
KODIAK WATER SYSTEM 9,547
USCG STATION KODIAK 3,092

Frequently asked questions about Kodiak tap water

Is Kodiak tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Kodiak. 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 Kodiak?

2 public water suppliers report drinking-water monitoring for Kodiak, Alaska to the EPA. Each is listed above with its population served.

What contaminants are in Kodiak's water?

The contaminants EPA monitoring detected in Kodiak include Copper, Nitrate-Nitrite, Nitrate, TTHM, Chloroform. 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.