Choctaw Ua, OK
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 11.4 ppb (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. Under the current 15 ppb rule this is not an exceedance, but it is above the 10 ppb action level that takes over in Nov 2027. Test your own tap; filter if your result shows lead.
Choctaw Ua at a glance
Choctaw Ua serves about 3,926 people through 573 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 Oklahoma County, Oklahoma. EPA system ID: OK2005510; phone on file: 405-390-8276. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is up 11.4 ppb from 0 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Choctaw Ua is 11.4 ppb across 3 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 11.4 ppb over 10 |
| 2022 | 0 (not detected) |
| 2016 | 0 (not detected) |
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. Choctaw Ua's 11.4 ppb sits at the 99th percentile in Oklahoma and the 98th nationally (higher means more lead).
Nearby utilities
35 other systems share Oklahoma County; 1 of them has a higher latest lead result than Choctaw Ua. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Oklahoma City | 644,000 | 0 (not detected) |
| Edmond Pwa | 79,408 | 0 (not detected) |
| Midwest City | 55,935 | 1.2 ppb |
| Tinker Air Force Base | 24,645 | 0 (not detected) |
| Del City | 22,128 | 1.6 ppb |
| Bethany | 20,307 | 0 (not detected) |
| Deer Creek Rural Water Corp | 5,500 | 0 (not detected) |
| Harrah | 4,190 | 1.1 ppb |
| Nichols Hills | 4,020 | 0 (not detected) |
| Spencer | 3,746 | 2.3 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Choctaw, 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 Choctaw Ua 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. This system is in the band the 2027 10 ppb rule changes.