Shageluk Water System, AK
Lead detected, under the action levels
Latest 90th-percentile lead: 0.71 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
Shageluk Water System serves about 60 people through 40 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 Yukon-Koyukuk Census Area County, Alaska. EPA system ID: AK2280040; phone on file: 907-590-1817. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is down 1.65 ppb from 2.36 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Shageluk Water System is 4.38 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.71 ppb |
| 2021 | 2.36 ppb |
| 2016 | 4.38 ppb |
Where this result ranks
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. Shageluk Water System's 0.71 ppb sits at the 32nd percentile in Alaska and the 47th nationally (higher means more lead).
Nearby utilities
26 other systems share Yukon-Koyukuk Census Area County; 20 of them have a higher latest lead result than Shageluk Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Ft. Yukon Public Water System | 665 | 4.6 ppb |
| Galena Wtp1 - City | 490 | 3.6 ppb |
| Nenana Municipal Water | 486 | 0.7 ppb |
| Mcgrath Water System | 341 | 0.53 ppb |
| Huslia Public Water System | 323 | 2.7 ppb |
| Galena Wtp2 - Gila | 290 | 2.5 ppb |
| Too'Gha Inc - In Tanana | 271 | 1.6 ppb |
| Nulato River Well | 245 | 2.3 ppb |
| Ruby Water System | 215 | 9 ppb |
| Kaltag Public Water System | 214 | 2.1 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Shageluk, 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 Shageluk Water System whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 3155 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. The action level is dropping - the 10 ppb rule from 2027.