Alaska tap water quality

408 community water systems serving 702,057 people.

Data: U.S. EPA · How we read the data · How we check it

systems with PFAS above a federal limit

226,251

people served by them

systems EPA tested for PFAS

systems above the lead action level

PFAS: EPA's 2023–2025 testing. Lead: results from the last five years. 10 more systems have no recent lead results in EPA's database.

Water systems with PFAS above the federal limit

Based on EPA's UCMR 5 results (2023–2025) compared to the April 2024 limits, the way EPA compares them. Systems have until 2029 to comply. Largest first.

Alaska PFAS report: chart, rankings and data to download →

Largest water systems in Alaska

Anchorage Water & Wastewater Utility
221,351 people · Surface water · Alaska
PFOA above limitAlso: PFHxS detected
Golden Heart Utilities
78,324 people · Groundwater · Alaska
PFOA detectedAlso: PFHxS detected
City and Borough of Juneau Water System
38,526 people · Surface water · Alaska
No PFAS above limits
Jber-Elmendorf Water System
30,003 people · Purchased surface water · Alaska
No PFAS above limits
College Utilities Corporation
27,000 people · Purchased groundwater · Alaska
PFOA detectedAlso: PFHxS detected
Doyon Utilities Jber – Richardson
20,284 people · Surface water · Alaska
No PFAS above limits
Ft Wainwright – Main Post Water System
20,076 people · Groundwater · Alaska
PFHxS detected
Wasilla Water System
18,492 people · Groundwater · Alaska
PFHxS detected
Eielson – Air Force Base Water System
11,870 people · Groundwater · Alaska
No PFAS above limitsAlso: 1 health-based violation since 2016
Kodiak Water System
9,547 people · Surface water · Alaska
No PFAS above limits
Sitka Water System
9,448 people · Surface water · Alaska
No PFAS above limitsAlso: 3 health-based violations since 2016
Skagway Water System
9,411 people · Groundwater · Alaska
No PFAS above limitsAlso: 2 health-based violations since 2016
Unalaska Water System
9,400 people · Surface water · Alaska
No PFAS above limits
Ketchikan Public Utilities
8,937 people · Surface water · Alaska
Haloacetic acids (HAA5) violations
Palmer Water System
8,111 people · Groundwater · Alaska
No PFAS above limits

Alaska cities and towns

Most health-based violations since 2016

Kotzebue Municipal. Water System
3,234 people · Surface water · Alaska
Lead above action levelAlso: Haloacetic acids (HAA5) violations · Total trihalomethanes (TTHM) violations
Kwethluk New Piped Water System
760 people · Surface water · Alaska
Haloacetic acids (HAA5) violationsAlso: Total trihalomethanes (TTHM) violations
Kivalina Water System
452 people · Surface water · Alaska
Not in EPA's PFAS sampleAlso: 58 health-based violations since 2016
Tatitlek Water System
95 people · Surface water · Alaska
Haloacetic acids (HAA5) violationsAlso: Coliform bacteria violations · Total trihalomethanes (TTHM) violations
Unalakleet City Water Supply
757 people · Groundwater · Alaska
Coliform bacteria violation
Hydaburg Water System
415 people · Surface water · Alaska
Haloacetic acids (HAA5) violationsAlso: Total trihalomethanes (TTHM) violations · Coliform bacteria violations
Galena Wtp1 – City
490 people · Groundwater · Alaska
Total trihalomethanes (TTHM) violationsAlso: Haloacetic acids (HAA5) violations
Vallenar View Mobile Home Park Water System
225 people · Surface water · Alaska
Haloacetic acids (HAA5) violationsAlso: Total trihalomethanes (TTHM) violations · Coliform bacteria violations
Grayling Water System
207 people · Surface water · Alaska
Coliform bacteria violations
Kake Municipal Water
415 people · Surface water · Alaska
Haloacetic acids (HAA5) violationsAlso: Total trihalomethanes (TTHM) violation
Deering Utility System
160 people · Surface water · Alaska
Total trihalomethanes (TTHM) violationsAlso: Haloacetic acids (HAA5) violations
Klawock Water System
904 people · Surface water · Alaska
Haloacetic acids (HAA5) violations
Selawik Safewater Facility
846 people · Surface water · Alaska
Total trihalomethanes (TTHM) violation
Kb Sub. Water Service Association
170 people · Groundwater · Alaska
Arsenic violations
Buckland Water System
600 people · Surface water · Alaska
Haloacetic acids (HAA5) violationsAlso: Total trihalomethanes (TTHM) violations

All Alaska utilities on this site

Every Alaska system serving 50,000+ people or with PFAS above a federal limit, A to Z. Download all 408 systems as CSV.

Questions

Does Alaska tap water have PFAS?

EPA tested 28 community water systems in Alaska for 29 PFAS between 2023 and 2025. 7 had at least one regulated PFAS detected, and 2 had an entry-point average above a 2024 federal limit. Those 2 systems serve about 226,251 people (32% of people on community water in Alaska). Systems have until 2029 to meet the limits.

How many Alaska water systems have violations?

248 systems in Alaska had at least one health-based violation since 2016 (2,138 violations in total). 356 violations are currently listed as unaddressed.

Which Alaska water systems are over the lead action level?

3 systems had a lead 90th percentile above the 15 ppb action level in their most recent results from the last five years. Another 10 systems have no lead results in EPA's database from the last five years. Lead depends on each home's pipes, so a test of your own tap is the only way to know your level.

Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.