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Tap water quality report

Chalkyitsik, AK

EPA monitoring detected 16 contaminants across the 1 water supplier serving Chalkyitsik. 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.

1
water supplier
76
people served
16
contaminants found
Alaska rankings Lead in Alaska PFAS in Alaska

What was found in Chalkyitsik'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
1400 µg/L 108%
of the EPA limit, at the 95th percentile of samples — 1300 µg/L
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2019
1/1 SYR4
Nitrate-Nitrite
244.9 µg/L 2.4%
of the EPA limit 10000 µg/L
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2019
1/1 SYR4
TTHM
179.445 µg/L 224%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2019
1/1 SYR4
Chloroform
175 µg/L
No EPA limit set
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
104.75 µg/L 175%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2019
1/1 SYR4
Barium
72 µg/L 3.6%
of the EPA limit 2000 µg/L
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2019
1/1 SYR4
Dichloroacetic Acid
60.05 µg/L
No EPA limit set
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2019
1/1 SYR4
Trichloroacetic Acid
48.2 µg/L
No EPA limit set
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2019
1/1 SYR4
Lead
8.68 µg/L 58%
of the EPA limit 15 µg/L
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2019
1/1 SYR4
Monochloroacetic Acid
6.4 µg/L
No EPA limit set
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2019
1/1 SYR4
Bromodichloromethane
3.52 µg/L
No EPA limit set
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
1.4 pCi/L 28%
of the EPA limit 5 pCi/L
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2016
1/1 SYR4
Chromium
1.2 µg/L 1.2%
of the EPA limit 100 µg/L
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2019
1/1 SYR4
Dibromochloromethane
0.8000 µg/L
No EPA limit set
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2019
1/1 SYR4
Arsenic
0.3230 µg/L 3.2%
of the EPA limit 10 µg/L
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2012
1/1 SYR4
Lead
0.0055 mg/L 37%
of the EPA limit 0.0150 mg/L
Main supplier: CHALKYITSIK VILLAGE WATER · 76 people · 2025
1/1 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 Chalkyitsik

SupplierPopulation served
CHALKYITSIK VILLAGE WATER 76

Frequently asked questions about Chalkyitsik tap water

Is Chalkyitsik tap water safe to drink?

EPA testing detected 16 contaminants in the water serving Chalkyitsik. 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 Chalkyitsik?

1 public water supplier report drinking-water monitoring for Chalkyitsik, Alaska to the EPA. Each is listed above with its population served.

What contaminants are in Chalkyitsik's water?

The contaminants EPA monitoring detected in Chalkyitsik include Copper, Nitrate-Nitrite, TTHM, Chloroform, Total Haloacetic Acids (HAA5). 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.