Chalkyitsik Village Water, AK
Exceeded the action level in the past
Latest 90th-percentile lead: 5.5 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. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Who runs the water here
Chalkyitsik Village Water serves about 76 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 surface water, in Yukon-Koyukuk Census Area County, Alaska. EPA system ID: AK2300183; phone on file: 907-848-8117. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is down 20.5 ppb from 26 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Chalkyitsik Village Water is 26 ppb across 7 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 5.5 ppb |
| 2023 | 26 ppb over 15 |
| 2020 | 8.3 ppb |
| 2019 | 8 ppb |
| 2018 | 4.9 ppb |
| 2018 | 4.9 ppb |
| 2017 | 4.9 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. Chalkyitsik Village Water's 5.5 ppb sits at the 88th percentile in Alaska and the 92nd nationally (higher means more lead).
Nearby utilities
26 other systems share Yukon-Koyukuk Census Area County; 2 of them have a higher latest lead result than Chalkyitsik Village Water. 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; Chalkyitsik, 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 Chalkyitsik Village Water whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1350 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. More in what a past exceedance means today.