Graham County Utilities - Pima, AZ
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2022-2024). 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 Graham County Utilities - Pima
Graham County Utilities - Pima serves about 3,899 people through 1,632 service connections, which makes it a medium-sized system under EPA's size classes. It is privately owned and draws groundwater, in Graham County, Arizona. EPA system ID: AZ0405002; phone on file: 928-485-2451. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Graham County Utilities - Pima's lead record
Against the period ending 2021 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Graham County Utilities - Pima is 0 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2017 | 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. Graham County Utilities - Pima's reported as 0 (not detected) sits at the 55th percentile in Arizona and the 34th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
6 other systems share Graham County; 4 of them have a higher latest lead result than Graham County Utilities - Pima. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Safford City Of | 20,600 | 0 (not detected) |
| Usdj Fbp Fed Corr Inst Safford | 949 | 5.7 ppb |
| Adoc Aspc Fort Grant | 800 | 9.5 ppb |
| Graham County Utilities-Fort Thomas | 452 | 32 ppb |
| Eden Water Company Inc | 400 | 0.9 ppb |
| Ash Creek Water Company | 310 | 0 (not detected) |
Next steps for Pima, AZ
Look up your address in Graham County Utilities - Pima'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 Graham County Utilities - Pima 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.