Clinton, OK
Lead detected, under the action levels
Latest 90th-percentile lead: 1.5 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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About Clinton
Clinton serves about 8,883 people through 4,540 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 Custer County, Oklahoma. EPA system ID: OK1010828; phone on file: 580-592-4554. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Clinton's lead record
Against the period ending 2024 (1.8 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Clinton is 1.8 ppb across 11 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.5 ppb |
| 2024 | 1.8 ppb |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 0 (not detected) |
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. Clinton's 1.5 ppb sits at the 65th percentile in Oklahoma and the 64th nationally (higher means more lead).
Neighbouring systems
10 other systems share Custer County; 2 of them have a higher latest lead result than Clinton. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Weatherford | 10,833 | 0 (not detected) |
| Thomas | 1,238 | 2.5 ppb |
| Custer County Rwd #3 | 960 | 0 (not detected) |
| Arapaho | 748 | 0 (not detected) |
| Frontier Development Auth | 437 | 0 (not detected) |
| Custer City Pws | 393 | 6.5 ppb |
| Butler | 345 | 0 (not detected) |
| Country East Mhp | 97 | 0.9 ppb |
| Shady Acres Custer County | 40 | 0 (not detected) |
| Foss Reservoir Mcd | 12 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Clinton, 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 Clinton 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. What a 90th-percentile result does and does not tell you: how to read a lead result. The action level is dropping - the 10 ppb rule from 2027.