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Tap water quality report

Ketchikan, AK

EPA monitoring detected 18 contaminants across the 7 water suppliers serving Ketchikan. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

7
water suppliers
10,388
people served
18
contaminants found
Alaska rankings Lead in Alaska PFAS in Alaska

What was found in Ketchikan's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Copper
2700 µg/L 208%
of the EPA limit, in the worst sample — 1300 µg/L
 5/7 SYR4
Total Haloacetic Acids (HAA5)
770 µg/L 1283%
of the EPA limit, in the worst sample — 60 µg/L
 5/7 SYR4
Trichloroacetic Acid
530 µg/L
No EPA limit set
 5/7 SYR4
TTHM
320 µg/L 400%
of the EPA limit, in the worst sample — 80 µg/L
 5/7 SYR4
Chloroform
316 µg/L
No EPA limit set
 5/7 SYR4
Dichloroacetic Acid
230 µg/L
No EPA limit set
 5/7 SYR4
Nitrate-Nitrite
213 µg/L 2.1%
of the EPA limit 10000 µg/L
 4/7 SYR4
Lead
51 µg/L 340%
of the EPA limit, in the worst sample — 15 µg/L
 5/7 SYR4
Monochloroacetic Acid
14 µg/L
No EPA limit set
 5/7 SYR4
Bromodichloromethane
13.8 µg/L
No EPA limit set
 5/7 SYR4
Barium
10.4 µg/L 0.5%
of the EPA limit 2000 µg/L
 2/7 SYR4
Monobromoacetic Acid
3.1 µg/L
No EPA limit set
 1/7 SYR4
Dibromochloromethane
1.48 µg/L
No EPA limit set
 1/7 SYR4
Gross Beta Particle Activity
1.3 pCi/L
No EPA limit set
 2/7 SYR4
Toluene
0.6600 µg/L 0.1%
of the EPA limit 1000 µg/L
 1/7 SYR4
Hexachlorocyclopentadiene
0.3000 µg/L 0.6%
of the EPA limit 50 µg/L
 1/7 SYR4
Combined Radium (-226 And -228)
0.1500 pCi/L 3%
of the EPA limit 5 pCi/L
 1/7 SYR4
Lead
0.0317 mg/L 211%
above the EPA limit of 0.0150 mg/L
 5/7 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 single worst sample on record — 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 Ketchikan

SupplierPopulation served
KETCHIKAN PUBLIC UTILITIES 8,937
SOUTH TONGASS WATER UTILITY 975
VALLENAR VIEW MOBILE HOME PARK 225
KETCHIKAN WATER, TRUCK 1 100
KASAAN 66
PORT PROTECTION 60
KETCHIKAN H2O 25

Frequently asked questions about Ketchikan tap water

Is Ketchikan tap water safe to drink?

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

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

What contaminants are in Ketchikan's water?

The contaminants EPA monitoring detected in Ketchikan include Copper, Total Haloacetic Acids (HAA5), Trichloroacetic Acid, TTHM, Chloroform. The full list, with the highest level found 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.