Nanwalek, AK
Lead detected, under the action levels
Latest 90th-percentile lead: 1.19 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.
Nanwalek at a glance
Nanwalek serves about 281 people through 55 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 Kenai Peninsula Borough County, Alaska. EPA system ID: AK2240464; phone on file: 907-281-2284. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is down 3.92 ppb from 5.11 ppb in the period ending 2019. The highest 90th-percentile result EPA holds for Nanwalek is 5.11 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.19 ppb |
| 2019 | 5.11 ppb |
| 2016 | 0 (not detected) |
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. Nanwalek's 1.19 ppb sits at the 42nd percentile in Alaska and the 58th nationally (higher means more lead).
Nearby utilities
26 other systems share Kenai Peninsula Borough County; 11 of them have a higher latest lead result than Nanwalek. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Homer Water System | 7,008 | 2 ppb |
| Kenai Water System | 5,700 | 0 (not detected) |
| Soldotna | 4,807 | 4.53 ppb |
| Seward | 3,324 | 0 (not detected) |
| Anchor Point Safe Water Corporation | 1,000 | 6.2 ppb |
| Seward Marine Industrial Cent | 545 | 2.64 ppb |
| Nikishka Bay | 470 | 2.7 ppb |
| Seldovia Water System | 418 | 1.4 ppb |
| Nikolaevsk Community Water System | 360 | 0 (not detected) |
| Voznesenka Village | 300 | 1.1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Nanwalek, 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 Nanwalek 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. 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.