Gtnp-Jackson Lake Lodge, WY
Lead detected, under the action levels
Latest 90th-percentile lead: 2 ppb (monitoring period 2026-2028). 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
Gtnp-Jackson Lake Lodge serves about 1,830 people through 125 service connections, which makes it a small system under EPA's size classes. It is federally owned and draws groundwater, in Teton County, Wyoming. EPA system ID: WY5680103; phone on file: 307-739-3366. 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 2025 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Gtnp-Jackson Lake Lodge is 13 ppb across 8 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2028 | 2 ppb |
| 2025 | 2 ppb |
| 2024 | 2 ppb |
| 2023 | 6 ppb |
| 2022 | 6 ppb |
| 2019 | 2 ppb |
| 2019 | 0 (not detected) |
| 2017 | 13 ppb over 10 |
How Gtnp-Jackson Lake Lodge compares
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. Gtnp-Jackson Lake Lodge's 2 ppb sits at the 72nd percentile in Wyoming and the 72nd nationally (higher means more lead).
Neighbouring systems
37 other systems share Teton County; 10 of them have a higher latest lead result than Gtnp-Jackson Lake Lodge. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Jackson, Town Of | 24,760 | 1 ppb |
| Ynp-Old Faithful | 7,745 | 2 ppb |
| Ynp - Lake Village | 5,925 | 4 ppb |
| Gtnp-Colter Bay Village | 4,514 | 1 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 |
Your move
Test your own tap with a certified lab first-draw sample; Moose, 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 Gtnp-Jackson Lake Lodge 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.