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Uinta, WY

Low Risk (29/100)

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 Uinta in Wyoming · Population: 20,605

TRI sites such as Carter Creek Gas Plant; Silver Eagle Refining-Evanston; Mitsubishi Chemical Carbon Fiber & Composites; SDWIS systems such as LYMAN, TOWN OF; BRIDGER VALLEY JOINT POWERS BOARD; MOUNTAIN VIEW, TOWN OF anchor Uinta, WY's EPA extract. Derived burden score 29/100 (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 Uinta include BRIDGER VALLEY JOINT POWERS BOARD; MOUNTAIN VIEW, TOWN OF, while Carter Creek Gas Plant leads reported TRI pounds among local Form R filers. AQS median AQI 7 / peak 44 in 2024.

Burden score 29/100 (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 Uinta -- 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.

Release-over-release change

What changed for Uinta, WY: EPA TRI 2023 reporting year

2022 → 2023

Same facilities, both years

-13.1%

4 facilities that filed in 2022 and 2023

Whole inventory

-13.1%

107.0 thousand lb → 93.0 thousand lb, every facility that filed

  • Uinta, WY's total reported releases fell from 107.0 thousand lb in 2022 to 93.0 thousand lb in 2023, based on EPA TRI filings.
  • Uinta, WY's land releases fell from 54.9 thousand lb in 2022 to 33.8 thousand lb in 2023, based on EPA TRI filings.
  • Uinta, WY's off-site transfers fell from 398 lb in 2022 to 263 lb in 2023, based on EPA TRI filings.
  • Uinta, WY's air releases rose from 51.6 thousand lb in 2022 to 59.0 thousand lb in 2023, based on EPA TRI filings.
County population (Census ACS)
20,605
TRI Facilities
5
Water Systems
3
Superfund Sites
0
Total Releases
233.2K lbs

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 297 (100%) 0 0 44
2023 365 (100%) 0 0 32
2022 363 (99%) 2 0 55
2021 361 (99%) 3 0 60
2020 323 (88%) 41 2 122
2024 Good Air Quality: 100% of days
Median AQI: 7

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 (3)

System System pop (SDWIS) Violations
LYMAN, TOWN OF 2,203 0
BRIDGER VALLEY JOINT POWERS BOARD 1,728 3
MOUNTAIN VIEW, TOWN OF 1,250 1

TRI Facilities (5)

# Facility Total Releases
1 Carter Creek Gas Plant 178.8K lbs
2 Silver Eagle Refining-Evanston 42.8K lbs
3 Mitsubishi Chemical Carbon Fiber & Composites 11.6K lbs
4 Reladyne West LLC 0 lbs
5 Evanston 0 lbs

Cities in Uinta (3)

Evanston
5 facilities · 2 water
Mountain View
0 facilities · 2 water
Lyman
0 facilities · 1 water

Frequently Asked Questions

What is the environmental risk level in Uinta, Wyoming? ▼
Uinta, WY has an environmental risk score of 29/100 (Low Risk), based on 5 TRI facilities, 0 Superfund sites, and 3 water systems on record. 2 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.
Are there Superfund sites in Uinta? ▼
No Superfund National Priorities List (NPL) sites are currently registered in Uinta, WY in the EPA database.
How many toxic release facilities are in Uinta? ▼
Uinta, WY has 5 TRI-reporting facilities on record with the EPA Toxic Release Inventory, with a combined total of 233.2K lbs in reported toxic releases. TRI facilities self-report annual chemical release data to the EPA.
What is the air quality in Uinta? ▼
In 2024, Uinta, WY recorded a median AQI of 7 and a peak AQI of 44. 100% of monitored days had "Good" air quality (AQI 0–50). Source: EPA Air Quality System (AQS) Annual AQI by County.
Is the drinking water safe in Uinta? ▼
Uinta, WY has 3 EPA-regulated water systems. 2 systems have reported health-based violations (MCL exceedances). A past violation does not necessarily mean water is currently unsafe. For current water quality, contact your local water utility. Source: EPA SDWIS.
What environmental agencies cover Uinta? ▼
Environmental compliance in Uinta, Wyoming is overseen by the U.S. Environmental Protection Agency (EPA) at the federal level and the Wyoming state environmental agency. Facilities report to the EPA Toxic Release Inventory, water systems are regulated under the Safe Drinking Water Act, and contaminated sites are managed under the Superfund program. Contact your state environmental agency for local concerns.

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.

Related Guides

Understanding EPA Data
How EPA collects and publishes environmental data
Environmental Justice
Who lives near polluters and environmental hazards
How to Check Environmental Quality
Step-by-step guide to checking your local environment

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro