Jet, OK
Exceeded the action level in the past
Latest 90th-percentile lead: 1.4 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
Jet serves about 230 people through 150 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 groundwater, in Alfalfa County, Oklahoma. EPA system ID: OK2000211; phone on file: 580-626-4401. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Jet's lead record
Against the period ending 2025 (1.4 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Jet is 53 ppb across 19 monitoring periods, 4 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.4 ppb |
| 2025 | 1.4 ppb |
| 2024 | 7.1 ppb |
| 2024 | 10.4 ppb over 10 |
| 2023 | 2.5 ppb |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 3.1 ppb |
| 2021 | 10.7 ppb over 10 |
| 2020 | 9 ppb |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 53 ppb over 15 |
| 2019 | 0 (not detected) |
| 2018 | 22.1 ppb over 15 |
| 2018 | 22.5 ppb over 15 |
| 2017 | 53 ppb over 15 |
| 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. Jet's 1.4 ppb sits at the 62nd percentile in Oklahoma and the 62nd nationally (higher means more lead).
Nearby utilities
8 other systems share Alfalfa County; 1 of them has a higher latest lead result than Jet. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Cherokee | 1,630 | 0 (not detected) |
| Alfalfa Co Rws & Swmd #1 North | 600 | 0 (not detected) |
| Alfalfa Co Rws & Swmd #1 | 550 | 4.9 ppb |
| Helena | 443 | 0 (not detected) |
| Carmen Public Works Authority | 355 | 0 (not detected) |
| Goltry | 268 | 0 (not detected) |
| Aline, Town Of | 214 | 0 (not detected) |
| Burlington | 156 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Jet, 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 Jet whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1426 ppb (copper action level 1,300 ppb).
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. More in what a past exceedance means today.