Chignik Lagoon Water System, AK
Lead detected, under the action levels
Latest 90th-percentile lead: 2.5 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. 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
Chignik Lagoon Water System serves about 273 people through 83 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 Lake And Peninsula Borough County, Alaska. EPA system ID: AK2261444; phone on file: 907-444-1919. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Chignik Lagoon Water System's lead record
Against the period ending 2024 (2.5 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Chignik Lagoon Water System is 11.8 ppb across 7 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2.5 ppb |
| 2024 | 2.5 ppb |
| 2024 | 3 ppb |
| 2023 | 3.3 ppb |
| 2023 | 2.72 ppb |
| 2022 | 5.84 ppb |
| 2019 | 11.8 ppb over 10 |
How Chignik Lagoon Water System compares
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. Chignik Lagoon Water System's 2.5 ppb sits at the 67th percentile in Alaska and the 77th nationally (higher means more lead).
Other water systems in Lake And Peninsula Borough County
8 other systems share Lake And Peninsula Borough County; 2 of them have a higher latest lead result than Chignik Lagoon Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Egegik | 485 | 3.4 ppb |
| Nondalton | 205 | 2 ppb |
| Chignik Lake Water System | 200 | 3.41 ppb |
| Chignik Bay Water System | 199 | 1.1 ppb |
| Kokhanok Water & Ww System | 160 | 0.64 ppb |
| Igiugig Water System | 100 | 2.1 ppb |
| Perryville Water System | 88 | 0.89 ppb |
| Newhalen Water System | 80 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Chignik Lagoon, 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 Chignik Lagoon Water System whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 2900 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Size matters more than most people expect: small vs large water systems.