Chignik Bay Water System, AK
Exceeded the action level in the past
Latest 90th-percentile lead: 1.1 ppb (monitoring period 2022-2022). 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.
About Chignik Bay Water System
Chignik Bay Water System serves about 199 people through 110 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 Lake And Peninsula Borough County, Alaska. EPA system ID: AK2260228; phone on file: 907-749-4003. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Chignik Bay Water System's lead record
That is down 3.5 ppb from 4.6 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Chignik Bay Water System is 16.6 ppb across 4 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2022 | 1.1 ppb |
| 2022 | 4.6 ppb |
| 2021 | 16.6 ppb over 15 |
| 2018 | 3.2 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. Chignik Bay Water System's 1.1 ppb sits at the 41st percentile in Alaska and the 57th nationally (higher means more lead).
Nearby utilities
8 other systems share Lake And Peninsula Borough County; 5 of them have a higher latest lead result than Chignik Bay 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 |
| Chignik Lagoon Water System | 273 | 2.5 ppb |
| Nondalton | 205 | 2 ppb |
| Chignik Lake Water System | 200 | 3.41 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 Bay, 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 Bay Water System whether it covers that cost before hiring anyone - many utilities now do.
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. What a 90th-percentile result does and does not tell you: how to read a lead result. Why an old exceedance still matters: over the limit before, under it now.