Jackson, Town Of, WY
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (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. 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.
Jackson, Town Of at a glance
Jackson, Town Of serves about 24,760 people through 4,300 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Teton County, Wyoming. EPA system ID: WY5600213; phone on file: 307-733-3079. They can tell you what your service line is made of and whether they pay to replace it.
Jackson, Town Of's lead record
Against the period ending 2025 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Jackson, Town Of is 4 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1 ppb |
| 2025 | 1 ppb |
| 2022 | 3 ppb |
| 2019 | 4 ppb |
| 2016 | 0 (not detected) |
Against other Wyoming systems
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. Jackson, Town Of's 1 ppb sits at the 53rd percentile in Wyoming and the 56th nationally (higher means more lead).
Other water systems in Teton County
37 other systems share Teton County; 21 of them have a higher latest lead result than Jackson, Town Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Ynp-Old Faithful | 7,745 | 2 ppb |
| Ynp - Lake Village | 5,925 | 4 ppb |
| Gtnp-Colter Bay Village | 4,514 | 1 ppb |
| Gtnp-Jackson Lake Lodge | 1,830 | 2 ppb |
| Rafter J Subdivision Hoa | 1,500 | 3 ppb |
| Aspens Pines W&S District | 1,400 | 2 ppb |
| Teton Village Water & Sewer District | 906 | 2 ppb |
| Melody Ranch Improvement & Service Dist. | 900 | 5 ppb |
| Spring Creek Improvement District | 400 | 3 ppb |
| Snake River Sporting Club | 332 | 5 ppb |
Next steps for Jackson, WY
Test your own tap with a certified lab first-draw sample; Jackson, 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 Jackson, Town Of whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1390 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. Systems that went over once often dip back under; here is what that means.