Teton, WY
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology.
Environmental data for Teton in Wyoming · Population: 23,358
TRI sites such as US Natl Park Service Grand Teton National Park (grte); SDWIS systems such as JACKSON, TOWN OF; GTNP-COLTER BAY VILLAGE; GTNP-JACKSON LAKE LODGE anchor Teton, WY's EPA extract. Derived burden score 23/100 (Low Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Teton include RAFTER J SUBDIVISION HOA; BAR Y ESTATES/GROS VENTRE WEST WTR DISTS; GTNP--MOOSE/BEAVER CREEK, while US Natl Park Service Grand Teton National Park (grte) leads reported TRI pounds among local Form R filers. AQS median AQI 44 / peak 138 in 2024.
Burden score 23/100 (Low Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Teton -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 276 (75%) | 88 | 2 | 138 |
| 2023 | 321 (88%) | 44 | 0 | 75 |
| 2022 | 332 (91%) | 33 | 0 | 100 |
| 2021 | 277 (76%) | 78 | 10 | 131 |
| 2020 | 312 (85%) | 42 | 7 | 165 |
Source: EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in Wyoming, see the EPA's AirNow.gov.
Water Systems (38)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| JACKSON, TOWN OF | 24,760 | 0 |
| GTNP-COLTER BAY VILLAGE | 4,514 | 0 |
| GTNP-JACKSON LAKE LODGE | 1,830 | 0 |
| RAFTER J SUBDIVISION HOA | 1,500 | 2 |
| ASPENS PINES W&S DISTRICT | 1,400 | 0 |
| TETON VILLAGE WATER & SEWER DISTRICT | 906 | 0 |
| MELODY RANCH IMPROVEMENT & SERVICE DIST. | 900 | 0 |
| SPRING CREEK IMPROVEMENT DISTRICT | 400 | 0 |
| SNAKE RIVER SPORTING CLUB | 332 | 0 |
| PINE BLUFF COURT | 312 | 0 |
| BAR Y ESTATES/GROS VENTRE WEST WTR DISTS | 270 | 1 |
| SKYLINE RANCH I&S DISTRICT | 260 | 0 |
| GTNP--MOOSE/BEAVER CREEK | 221 | 1 |
| FISH CREEK IMPROVEMENT AND SERVICE DIST | 210 | 0 |
| GROS VENTRE UTILITY | 200 | 0 |
| VALLEY VISTA ESTATES | 192 | 0 |
| Y-O INVESTMENTS, INC. | 173 | 0 |
| SQUAW CREEK WATER DISTRICT | 160 | 2 |
| GROS VENTRE NORTH HOA | 160 | 0 |
| EVANS MOBILE HOME COURT | 150 | 0 |
| INDIAN PAINTBRUSH WATER DISTRICT | 150 | 2 |
| TARGHEE TOWNE WATER DISTRICT | 120 | 0 |
| TETON SHADOWS HOA | 100 | 1 |
| RIVERMEADOWS WATER DISTRICT | 100 | 10 |
| VALLEY VIEW MUTUAL WATER COMPANY | 100 | 0 |
| RIVER MEADOWS | 90 | 0 |
| HI-COUNTRY WATER DISTRICT | 85 | 2 |
| SADDLE BUTTE WATER SYSTEM | 75 | 0 |
| WILSON PARK SUBDIVISION | 75 | 0 |
| OLD WEST CABINS | 70 | 0 |
| SOUTH PARK VILLAGE SUBDIVISION | 65 | 0 |
| BAR-B-BAR MEADOWS | 55 | 0 |
| C-V RANCHES (BOCES REG V) | 51 | 0 |
| BUFFALO VALLEY WATER DISTRICT | 50 | 0 |
| HWY 390 LLC | 50 | 0 |
| J-W SUBDIVISION ASSOCIATION | 40 | 0 |
| LITTLE HORSETHIEF CANYON HOA | 35 | 0 |
| TETON SCIENCE SCHOOL-WILSON CAMPUS | 31 | 0 |
TRI Facilities (1)
| # | Facility | Total Releases |
|---|---|---|
| 1 | US Natl Park Service Grand Teton National Park (grte) | 347 lbs |
Cities in Teton (6)
Frequently Asked Questions
What is the environmental risk level in Teton, Wyoming? ▼
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What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.