Grayling Water System, AK
Lead detected, under the action levels
Latest 90th-percentile lead: 2 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.
Grayling Water System at a glance
Grayling Water System serves about 207 people through 63 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: AK2280066; phone on file: 907-453-5148. They can tell you what your service line is made of and whether they pay to replace it.
Grayling Water System's lead record
Against the period ending 2024 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Grayling Water System is 7.4 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2 ppb |
| 2024 | 2 ppb |
| 2019 | 4.9 ppb |
| 2018 | 4.95 ppb |
| 2017 | 4.2 ppb |
| 2016 | 7.4 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. Grayling Water System's 2 ppb sits at the 58th percentile in Alaska and the 70th nationally (higher means more lead).
Other water systems in Yukon-Koyukuk Census Area County
26 other systems share Yukon-Koyukuk Census Area County; 14 of them have a higher latest lead result than Grayling 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 |
Your move
Test your own tap with a certified lab first-draw sample; Grayling, 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 Grayling Water System whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1485 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. Systems that went over once often dip back under; here is what that means.