Tatitlek Water System, AK
Exceeded the action level in the past
Latest 90th-percentile lead: 2.3 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. 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 Tatitlek Water System
Tatitlek Water System serves about 95 people through 26 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 Valdez-Cordova Census Area County, Alaska. EPA system ID: AK2291130; phone on file: 907-325-2311. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Tatitlek Water System's lead record
That is down 13.7 ppb from 16 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Tatitlek Water System is 71 ppb across 9 monitoring periods, 5 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2.3 ppb |
| 2024 | 16 ppb over 15 |
| 2024 | 38.6 ppb over 15 |
| 2024 | 71 ppb over 15 |
| 2023 | 20 ppb over 15 |
| 2023 | 38.6 ppb over 15 |
| 2020 | 5.5 ppb |
| 2018 | 5.5 ppb |
| 2017 | 11.45 ppb over 10 |
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. Tatitlek Water System's 2.3 ppb sits at the 63rd percentile in Alaska and the 76th nationally (higher means more lead).
Nearby utilities
17 other systems share Valdez-Cordova Census Area County; 5 of them have a higher latest lead result than Tatitlek Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Valdez Water System - Main | 4,500 | 4.7 ppb |
| Cordova City Water | 2,700 | 6 ppb |
| Valdez Southcentral | 675 | 0 (not detected) |
| Whittier Water System | 650 | 1.69 ppb |
| Valdez Robe River S/D | 464 | 1.12 ppb |
| Glennallen Water Works | 365 | 0 (not detected) |
| Kenny Lake Community Well | 236 | 0 (not detected) |
| Kenny Lake Fire Hall | 200 | 0 (not detected) |
| Mentasta Washeteria/14 Plex | 90 | 1 ppb |
| Tezdlende Estates And Watering Point | 75 | 0.15 ppb |
Next steps for Tatitlek, AK
Test your own tap with a certified lab first-draw sample; Tatitlek, 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 Tatitlek Water System whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1442 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. 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.