Tecumseh Utility Authority, OK
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2026). 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.
About Tecumseh Utility Authority
Tecumseh Utility Authority serves about 6,098 people through 2,559 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 surface water, in Pottawatomie County, Oklahoma. EPA system ID: OK1020506; phone on file: 405-598-2188. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Tecumseh Utility Authority's lead record
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Tecumseh Utility Authority is 20.5 ppb across 6 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2025 | 20.5 ppb over 15 |
| 2022 | 0 (not detected) |
| 2019 | 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. Tecumseh Utility Authority's reported as 0 (not detected) sits at the 40th percentile in Oklahoma and the 35th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Pottawatomie County
14 other systems share Pottawatomie County; 8 of them have a higher latest lead result than Tecumseh Utility Authority. 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 |
| 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) |
| Asher Util Dev Auth | 375 | 0.61 ppb |
| Pottawatomie Co. Rwd #3 (Dale Plant) | 313 | 0 (not detected) |
| St. Louis Rwd | 225 | 0.43 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Tecumseh, 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 Tecumseh Utility Authority 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.