Vance Afb, OK
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (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.
Who runs the water here
Vance Afb serves about 3,231 people through 592 service connections, which makes it a small system under EPA's size classes. It is federally owned and draws groundwater, in Garfield County, Oklahoma. EPA system ID: OK3002402; phone on file: 580-213-6248. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is down 4.2 ppb from 4.2 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Vance Afb is 17.3 ppb across 13 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2024 | 4.2 ppb |
| 2023 | 4.9 ppb |
| 2022 | 13.6 ppb over 10 |
| 2021 | 5 ppb |
| 2020 | 5.3 ppb |
| 2019 | 9.3 ppb |
| 2018 | 10.2 ppb over 10 |
| 2018 | 8.8 ppb |
| 2017 | 6.5 ppb |
| 2017 | 8.4 ppb |
| 2016 | 6.8 ppb |
| 2016 | 17.3 ppb over 15 |
Where this result ranks
Of the 870 Oklahoma systems with a lead result, the median latest reading is 0.81 ppb; 6 are over 15 ppb right now and 66 have gone over at some point. Vance Afb's reported as 0 (not detected) sits at the 37th percentile in Oklahoma and the 33rd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
20 other systems share Garfield County; 14 of them have a higher latest lead result than Vance Afb. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Enid | 49,347 | 5.1 ppb |
| Garfield Co Rwd #5 | 1,980 | 2 ppb |
| Waukomis Pwa | 1,366 | 6.8 ppb |
| Garfield Co Rwd #6 | 1,225 | 1.1 ppb |
| Garber Municipal Authority | 725 | 1.1 ppb |
| Highpoint Mhp | 600 | 10.7 ppb |
| Lahoma Pwa | 577 | 0 (not detected) |
| Covington | 553 | 1.2 ppb |
| Drummond | 405 | 1.7 ppb |
| Garfield Co Rwd # 4 | 334 | 0 (not detected) |
Next steps for Enid, OK
Test your own tap with a certified lab first-draw sample; Enid, OK 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 Vance Afb 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. More in what a past exceedance means today.