St. Marys Water System, AK
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2023). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
About St. Marys Water System
St. Marys Water System serves about 548 people through 174 service connections, which makes it a small system under EPA's size classes. It is owned by a Native American tribe and draws surface water, in Wade Hampton Census Area County, Alaska. EPA system ID: AK2270176; phone on file: 907-438-2617. Call that number and ask whether your address has a lead, galvanized or unknown service line.
St. Marys Water System's lead record
Against the period ending 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for St. Marys Water System is 0 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
| 2023 | 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. St. Marys Water System's reported as 0 (not detected) sits at the 12th percentile in Alaska and the 23rd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
11 other systems share Wade Hampton Census Area County; 10 of them have a higher latest lead result than St. Marys 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 |
| Chevak Water System | 938 | 4.9 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 |
| Russian Mission Water System | 340 | 1.1 ppb |
| Marshall Water System | 308 | 1.2 ppb |
Next steps for Saint Marys, AK
Look up your address in St. Marys Water System's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask St. Marys Water System whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 2024 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. The lead result guide covers how utilities pick the homes they sample. A zero today does not rule out a jump later - the rules are tightening in 2027.