Aspc Apache, AZ
Lead detected, under the action levels
Latest 90th-percentile lead: 5.9 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. 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.
About Aspc Apache
Aspc Apache serves about 540 people through 14 service connections, which makes it a small system under EPA's size classes. It is owned by the state and draws groundwater, in Apache County, Arizona. EPA system ID: AZ0401056; phone on file: 928-337-4845. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Aspc Apache's lead record
That is up 5.9 ppb from 0 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Aspc Apache is 5.9 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 5.9 ppb |
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2017 | 3.2 ppb |
Against other Arizona systems
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. Aspc Apache's 5.9 ppb sits at the 92nd percentile in Arizona and the 93rd nationally (higher means more lead).
Other water systems in Apache County
16 other systems share Apache County; 1 of them has a higher latest lead result than Aspc Apache. 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 |
| St Johns City Of | 3,500 | 0 (not detected) |
| 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 |
| Sanders School District | 350 | 1.5 ppb |
| Timber Knoll Dwid | 153 | 0 (not detected) |
Next steps for St. Johns, AZ
Test your own tap with a certified lab first-draw sample; St. Johns, AZ 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 Aspc Apache 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. Systems that went over once often dip back under; here is what that means.