Chevak Water System, AK
Lead detected, under the action levels
Latest 90th-percentile lead: 4.9 ppb (monitoring period 2023-2025). 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
Chevak Water System serves about 938 people through 188 service connections, which makes it a small system under EPA's size classes. It is owned by a Native American tribe and draws groundwater, in Wade Hampton Census Area County, Alaska. EPA system ID: AK2270320. Ask the utility on your bill for your address in their service line inventory.
Chevak Water System's lead record
That is down 2.41 ppb from 7.31 ppb in the period ending 2019. The highest 90th-percentile result EPA holds for Chevak Water System is 7.31 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4.9 ppb |
| 2019 | 7.31 ppb |
| 2016 | 2.4 ppb |
How Chevak 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. Chevak Water System's 4.9 ppb sits at the 86th percentile in Alaska and the 90th nationally (higher means more lead).
Nearby utilities
11 other systems share Wade Hampton Census Area County; 0 of them have a higher latest lead result than Chevak Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Hooper Bay | 1,375 | 1.4 ppb |
| Mountain Village Water System | 887 | 1.47 ppb |
| Emmonak Water System | 820 | 0.94 ppb |
| Scammon Bay Water System | 637 | 0 (not detected) |
| Kotlik Water System | 617 | 2 ppb |
| Pilot Station Water System | 580 | 4.8 ppb |
| Alakanuk Water System | 570 | 1.8 ppb |
| St. Marys Water System | 548 | 0 (not detected) |
| Russian Mission Water System | 340 | 1.1 ppb |
| Marshall Water System | 308 | 1.2 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Chevak, 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 Chevak 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. Why sampled homes are the worst-case ones is in the guide to reading the number. The action level is dropping - the 10 ppb rule from 2027.