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Tap water quality report

Seward, AK

EPA monitoring detected 19 contaminants across the 4 water suppliers serving Seward. 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.

4
water suppliers
4,045
people served
19
contaminants found
Alaska rankings Lead in Alaska PFAS in Alaska

What was found in Seward'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
122.55 µg/L 9.4%
of the EPA limit 1300 µg/L
Main supplier: SEWARD · 3,324 people · 2017
Highest in the city: 772.25 µg/L — SEWARD MARINE INDUSTRIAL CENT · 545 people · 2017
4/4 SYR4
Nitrate-Nitrite
618 µg/L 6.2%
of the EPA limit 10000 µg/L
Main supplier: SEWARD · 3,324 people · 2019
4/4 SYR4
Nitrate
261 µg/L 2.6%
of the EPA limit 10000 µg/L
Highest in the city: BAY VIEW TRAILER COURT · 51 people · 2017
2/4 SYR4
Barium
10.2 µg/L 0.5%
of the EPA limit 2000 µg/L
Highest in the city: SALMON CREEK TRAILER COURT · 125 people · 2013
2/4 SYR4
Lead
4.067 µg/L 27%
of the EPA limit 15 µg/L
Main supplier: SEWARD · 3,324 people · 2017
Highest in the city: 10.15 µg/L — BAY VIEW TRAILER COURT · 51 people · 2019
4/4 SYR4
TTHM
4.1235 µg/L 5.2%
of the EPA limit 80 µg/L
Main supplier: SEWARD · 3,324 people · 2019
Highest in the city: 8.577 µg/L — SEWARD MARINE INDUSTRIAL CENT · 545 people · 2019
2/4 SYR4
Chloroform
1.03 µg/L
No EPA limit set
Main supplier: SEWARD · 3,324 people · 2019
Highest in the city: 6.682 µg/L — SEWARD MARINE INDUSTRIAL CENT · 545 people · 2019
2/4 SYR4
Total Haloacetic Acids (HAA5)
6.67 µg/L 11%
of the EPA limit 60 µg/L
Highest in the city: SEWARD MARINE INDUSTRIAL CENT · 545 people · 2019
1/4 SYR4
Dichloroacetic Acid
3.54 µg/L
No EPA limit set
Highest in the city: SEWARD MARINE INDUSTRIAL CENT · 545 people · 2019
1/4 SYR4
Trichloroacetic Acid
3.18 µg/L
No EPA limit set
Highest in the city: SEWARD MARINE INDUSTRIAL CENT · 545 people · 2019
1/4 SYR4
Combined Radium (-226 And -228)
1.7633 pCi/L 35%
of the EPA limit 5 pCi/L
Main supplier: SEWARD · 3,324 people · 2019
2/4 SYR4
Bromodichloromethane
1.2525 µg/L
No EPA limit set
Main supplier: SEWARD · 3,324 people · 2019
Highest in the city: 1.745 µg/L — SEWARD MARINE INDUSTRIAL CENT · 545 people · 2019
2/4 SYR4
Dibromochloromethane
1.299 µg/L
No EPA limit set
Main supplier: SEWARD · 3,324 people · 2019
1/4 SYR4
Arsenic
0.9621 µg/L 9.6%
of the EPA limit 10 µg/L
Highest in the city: BAY VIEW TRAILER COURT · 51 people · 2017
2/4 SYR4
Gross Alpha, Excl. Radon And U
0.8280 pCi/L 5.5%
of the EPA limit 15 pCi/L
Main supplier: SEWARD · 3,324 people · 2016
2/4 SYR4
Bromoform
0.6797 µg/L
No EPA limit set
Main supplier: SEWARD · 3,324 people · 2019
1/4 SYR4
Dichloromethane
0.5800 µg/L 12%
of the EPA limit 5 µg/L
Highest in the city: SALMON CREEK TRAILER COURT · 125 people · 2017
1/4 SYR4
Combined Uranium
0.0412 µg/L 0.1%
of the EPA limit 30 µg/L
Main supplier: SEWARD · 3,324 people · 2019
Highest in the city: 0.0700 µg/L — SEWARD MARINE INDUSTRIAL CENT · 545 people · 2016
2/4 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: SEWARD · 3,324 people · 2023
Highest in the city: 0.0032 mg/L — SEWARD MARINE INDUSTRIAL CENT · 545 people · 2025
4/4 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 Seward

SupplierPopulation served
SEWARD 3,324
SEWARD MARINE INDUSTRIAL CENT 545
SALMON CREEK TRAILER COURT 125
BAY VIEW TRAILER COURT 51

Frequently asked questions about Seward tap water

Is Seward tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Seward. 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 Seward?

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

What contaminants are in Seward's water?

The contaminants EPA monitoring detected in Seward include Copper, Nitrate-Nitrite, Nitrate, Barium, Lead. 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.