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Tap water quality report

Kasigluk, AK

EPA monitoring detected 12 contaminants across the 2 water suppliers serving Kasigluk. 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
516
people served
12
contaminants found
Alaska rankings Lead in Alaska PFAS in Alaska

What was found in Kasigluk'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
616.75 µg/L 47%
of the EPA limit 1300 µg/L
Main supplier: NEW KASIGLUK WATER SYSTEM · 276 people · 2019
2/2 SYR4
Fluoride
104 µg/L 2.6%
of the EPA limit 4000 µg/L
Main supplier: NEW KASIGLUK WATER SYSTEM · 276 people · 2012
1/2 SYR4
Barium
8.03 µg/L 0.4%
of the EPA limit 2000 µg/L
Main supplier: NEW KASIGLUK WATER SYSTEM · 276 people · 2012
Highest in the city: 84.9 µg/L — OLD KASIGLUK - AKIUK · 240 people · 2017
2/2 SYR4
Lead
28 µg/L 187%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: NEW KASIGLUK WATER SYSTEM · 276 people · 2019
2/2 SYR4
TTHM
10.084 µg/L 13%
of the EPA limit 80 µg/L
Main supplier: NEW KASIGLUK WATER SYSTEM · 276 people · 2017
2/2 SYR4
Total Haloacetic Acids (HAA5)
9.9515 µg/L 17%
of the EPA limit 60 µg/L
Main supplier: NEW KASIGLUK WATER SYSTEM · 276 people · 2017
2/2 SYR4
Chloroform
7.867 µg/L
No EPA limit set
Main supplier: NEW KASIGLUK WATER SYSTEM · 276 people · 2017
2/2 SYR4
Dichloroacetic Acid
5.034 µg/L
No EPA limit set
Main supplier: NEW KASIGLUK WATER SYSTEM · 276 people · 2017
2/2 SYR4
Trichloroacetic Acid
4.918 µg/L
No EPA limit set
Main supplier: NEW KASIGLUK WATER SYSTEM · 276 people · 2017
2/2 SYR4
Arsenic
2.39 µg/L 24%
of the EPA limit 10 µg/L
Highest in the city: OLD KASIGLUK - AKIUK · 240 people · 2017
1/2 SYR4
Bromodichloromethane
2.2095 µg/L
No EPA limit set
Main supplier: NEW KASIGLUK WATER SYSTEM · 276 people · 2017
1/2 SYR4
Lead
0.0056 mg/L 37%
of the EPA limit 0.0150 mg/L
Main supplier: NEW KASIGLUK WATER SYSTEM · 276 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 Kasigluk

SupplierPopulation served
NEW KASIGLUK WATER SYSTEM 276
OLD KASIGLUK - AKIUK 240

Frequently asked questions about Kasigluk tap water

Is Kasigluk tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Kasigluk. 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 Kasigluk?

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

What contaminants are in Kasigluk's water?

The contaminants EPA monitoring detected in Kasigluk include Copper, Fluoride, Barium, Lead, 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.