Coyle, OK
Exceeded the action level in the past
Latest 90th-percentile lead: 2.8 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.
Coyle at a glance
Coyle serves about 289 people through 182 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 Logan County, Oklahoma. EPA system ID: OK2004203; phone on file: 405-466-3741. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is up 2.2 ppb from 0.6 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Coyle is 19.8 ppb across 12 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2.8 ppb |
| 2024 | 0.6 ppb |
| 2023 | 6 ppb |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 3.4 ppb |
| 2019 | 2.7 ppb |
| 2018 | 6.2 ppb |
| 2017 | 0 (not detected) |
| 2017 | 0 (not detected) |
| 2016 | 0 (not detected) |
| 2016 | 19.8 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. Coyle's 2.8 ppb sits at the 83rd percentile in Oklahoma and the 80th nationally (higher means more lead).
Nearby utilities
13 other systems share Logan County; 2 of them have a higher latest lead result than Coyle. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Guthrie | 9,925 | 4.6 ppb |
| Logan Co Rwd #1 | 8,907 | 0 (not detected) |
| Langston Pwa | 1,670 | 1.5 ppb |
| Logan Co Rws & Swmd #3 | 1,618 | 0 (not detected) |
| Crescent | 1,411 | 3.5 ppb |
| Logan Co Rwd #2 | 1,146 | 1.7 ppb |
| Whispering Oaks | 350 | 0 (not detected) |
| Marshall | 258 | 0 (not detected) |
| Mulhall | 225 | 2.2 ppb |
| Orlando | 201 | 0.8 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Coyle, 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 Coyle 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. Why an old exceedance still matters: over the limit before, under it now.