St Johns City Of, AZ
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
Who runs the water here
St Johns City Of serves about 3,500 people through 1,275 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Apache County, Arizona. EPA system ID: AZ0401012; phone on file: 928-245-3651. Call that number and ask whether your address has a lead, galvanized or unknown service line.
St Johns City Of's lead record
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for St Johns City Of is 0 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 0 (not detected) |
Where this result ranks
Of the 730 Arizona systems with a lead result, the median latest reading is 0 ppb; 9 are over 15 ppb right now and 58 have gone over at some point. St Johns City Of's reported as 0 (not detected) sits at the 54th percentile in Arizona and the 33rd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Apache County
16 other systems share Apache County; 7 of them have a higher latest lead result than St Johns City Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Eagar Town Of | 4,590 | 1.2 ppb |
| Springerville Town Of | 1,972 | 0 (not detected) |
| Petrified Forest Np | 1,742 | 0 (not detected) |
| Cedar Grove Water Company | 1,564 | 1.4 ppb |
| Alpine Dwid | 1,320 | 0 (not detected) |
| Lord Az Water 2 - Winchester Trails | 1,289 | 0 (not detected) |
| Livco Water Company | 1,120 | 6 ppb |
| Aspc Apache | 540 | 5.9 ppb |
| Sanders School District | 350 | 1.5 ppb |
| Timber Knoll Dwid | 153 | 0 (not detected) |
Your move
Look up your address in St Johns City Of'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 Johns City Of 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. Small systems behave differently: why small systems go over more often.