Cokeville, Town Of, WY
Lead detected, under the action levels
Latest 90th-percentile lead: 1.1 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.
Who runs the water here
Cokeville, Town Of serves about 535 people through 184 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Lincoln County, Wyoming. EPA system ID: WY5600015; phone on file: 307-279-3227. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2024 (0.7 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Cokeville, Town Of is 3 ppb across 9 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.1 ppb |
| 2024 | 0.7 ppb |
| 2023 | 1.1 ppb |
| 2022 | 3 ppb |
| 2021 | 1.1 ppb |
| 2021 | 2 ppb |
| 2020 | 2 ppb |
| 2018 | 1 ppb |
| 2018 | 1 ppb |
Where this result ranks
Of the 311 Wyoming systems with a lead result, the median latest reading is 1 ppb; 0 are over 15 ppb right now and 16 have gone over at some point. Cokeville, Town Of's 1.1 ppb sits at the 54th percentile in Wyoming and the 57th nationally (higher means more lead).
Other water systems in Lincoln County
27 other systems share Lincoln County; 11 of them have a higher latest lead result than Cokeville, Town Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Kemmerer-Diamondville Jpb | 3,348 | 2 ppb |
| Star Valley Ranch, Town Of | 2,894 | 8 ppb |
| Afton, Board Of Pub Utilities | 2,000 | 1 ppb |
| Leisure Valley Inc/ Star Valley Rv Park | 1,897 | 1 ppb |
| Alpine, Town Of | 1,300 | 1 ppb |
| Bedford Water & Sewer District | 750 | 1 ppb |
| Greater Smoot W&S District | 720 | 1 ppb |
| Nordic Ranches Water, Llc. | 465 | 3 ppb |
| Thayne, Town Of | 366 | 1 ppb |
| La Barge, Town Of | 347 | 0 (not detected) |
Next steps for Cokeville, WY
Test your own tap with a certified lab first-draw sample; Cokeville, WY 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 Cokeville, Town Of 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. The action level is dropping - the 10 ppb rule from 2027.