Asher Util Dev Auth, OK
Exceeded the action level in the past
Latest 90th-percentile lead: 0.61 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. 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
Asher Util Dev Auth serves about 375 people through 170 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Pottawatomie County, Oklahoma. EPA system ID: OK3006311; phone on file: 405-784-2242. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2024 (0.78 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Asher Util Dev Auth is 24.25 ppb across 12 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.61 ppb |
| 2024 | 0.78 ppb |
| 2023 | 1.18 ppb |
| 2022 | 0.87 ppb |
| 2022 | 1.96 ppb |
| 2021 | 3.68 ppb |
| 2021 | 2.03 ppb |
| 2020 | 2.45 ppb |
| 2020 | 1.9 ppb |
| 2019 | 0.65 ppb |
| 2019 | 2.08 ppb |
| 2018 | 24.25 ppb over 15 |
Against other Oklahoma systems
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. Asher Util Dev Auth's 0.61 ppb sits at the 48th percentile in Oklahoma and the 45th nationally (higher means more lead).
Neighbouring systems
14 other systems share Pottawatomie County; 6 of them have a higher latest lead result than Asher Util Dev Auth. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Shawnee Municipal Authority | 29,990 | 2.8 ppb |
| Tecumseh Utility Authority | 6,098 | 0 (not detected) |
| Tri-County Rwd #2 | 5,172 | 3.97 ppb |
| Mcloud | 2,939 | 7.4 ppb |
| Pottawatomie Co Development Auth | 1,200 | 0.7 ppb |
| Maud | 1,136 | 0 (not detected) |
| Pottawatomie County Rwd #3 | 560 | 1.53 ppb |
| Wanette Public Works Authority | 402 | 0 (not detected) |
| Pottawatomie Co. Rwd #3 (Dale Plant) | 313 | 0 (not detected) |
| St. Louis Rwd | 225 | 0.43 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Asher, 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 Asher Util Dev Auth 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. More in what a past exceedance means today.