Atmautluak Water System, AK
Lead detected, under the action levels
Latest 90th-percentile lead: 7.6 ppb (monitoring period 2025-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Who runs the water here
Atmautluak Water System serves about 311 people through 3 service connections, which makes it a very small system under EPA's size classes. It is owned by a Native American tribe and draws groundwater, in Bethel Census Area County, Alaska. EPA system ID: AK2271033; phone on file: 907-553-5610. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Atmautluak Water System's lead record
That is up 4.6 ppb from 3 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Atmautluak Water System is 7.8 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 7.6 ppb |
| 2024 | 3 ppb |
| 2024 | 7.8 ppb |
| 2020 | 2.22 ppb |
| 2016 | 4.7 ppb |
Against other Alaska systems
Of the 394 Alaska systems with a lead result, the median latest reading is 1.6 ppb; 3 are over 15 ppb right now and 53 have gone over at some point. Atmautluak Water System's 7.6 ppb sits at the 93rd percentile in Alaska and the 95th nationally (higher means more lead).
Nearby utilities
34 other systems share Bethel Census Area County; 5 of them have a higher latest lead result than Atmautluak Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Bethel Heights Water System | 2,228 | 3.57 ppb |
| Bethel-City S/D Water | 1,660 | 0 (not detected) |
| Kwethluk New Piped Water System | 760 | 2 ppb |
| Quinhagak Water System | 724 | 0.75 ppb |
| Toksook Bay Water System | 661 | 5.6 ppb |
| Kipnuk Water System | 639 | 1 ppb |
| Akiachak Water System | 627 | 6.2 ppb |
| Kongiganak Water System | 547 | 4.5 ppb |
| Chefornak Water System | 513 | 1 ppb |
| Nunapitchuk Water System | 496 | 4.6 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Atmautluak, AK may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Atmautluak Water System whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 2500 ppb (copper action level 1,300 ppb).
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. The lead result guide covers how utilities pick the homes they sample. Size matters more than most people expect: small vs large water systems.