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Park, WY

Low Risk (24/100)

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 Park in Wyoming · Population: 30,109

TRI sites such as Wyoming Lime Producers; US Natl Park Service Yellowstone National Park; Certainteed Cody Plant; SDWIS systems such as CODY, CITY OF; YNP-OLD FAITHFUL; NORTHWEST RURAL WATER DISTRICT anchor Park, WY's EPA extract. Derived burden score 24/100 (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 Park include YNP-OLD FAITHFUL; YNP - LAKE VILLAGE; JUBYS MOBILE HOME PARK, while Wyoming Lime Producers leads reported TRI pounds among local Form R filers. AQS median AQI 13 / peak 88 in 2024.

Burden score 24/100 (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 Park -- 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 Park, WY: EPA TRI 2023 reporting year

2022 → 2023

Same facilities, both years

-10.0%

2 facilities that filed in 2022 and 2023

Whole inventory

-10.0%

329 lb → 296 lb, every facility that filed

  • Park, WY's total reported releases fell from 329 lb in 2022 to 296 lb in 2023, based on EPA TRI filings.
  • Park, WY's off-site transfers fell from 329 lb in 2022 to 296 lb in 2023, based on EPA TRI filings.
County population (Census ACS)
30,109
TRI Facilities
4
Water Systems
11
Superfund Sites
0
Total Releases
1.7K 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 322 (91%) 33 0 88
2023 343 (95%) 16 1 122
2022 314 (91%) 30 0 83
2021 129 (85%) 23 0 98
2020 112 (92%) 8 2 113
2024 Good Air Quality: 91% of days
Median AQI: 13

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 (11)

System System pop (SDWIS) Violations
CODY, CITY OF 10,224 0
YNP-OLD FAITHFUL 7,675 26
NORTHWEST RURAL WATER DISTRICT 7,330 0
YNP - LAKE VILLAGE 5,925 1
YNP-MAMMOTH HOT SPRINGS 2,600 0
GREEN ACRES MOBILE HOME PARK 375 0
MEETEETSE, TOWN OF 327 0
JUBYS MOBILE HOME PARK 300 1
RIVERS BEND TRAILER COURT 96 0
COPPERLEAF WATER SYSTEM 42 0
BIG VALLEY & CROSSED ARROWS IMP DIST 35 2

TRI Facilities (4)

# Facility Total Releases
1 Wyoming Lime Producers 1.5K lbs
2 US Natl Park Service Yellowstone National Park 204 lbs
3 Certainteed Cody Plant 14 lbs
4 Y-Tex Corp 0 lbs

Cities in Park (5)

Cody
2 facilities · 4 water
Frannie
1 facilities · 1 water
Yellowstone National Park
1 facilities · 0 water
Yellowstone
0 facilities · 3 water
Meeteetse
0 facilities · 2 water

Frequently Asked Questions

What is the environmental risk level in Park, Wyoming? ▼
Park, WY has an environmental risk score of 24/100 (Low Risk), based on 4 TRI facilities, 0 Superfund sites, and 11 water systems on record. 4 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.
Are there Superfund sites in Park? ▼
No Superfund National Priorities List (NPL) sites are currently registered in Park, WY in the EPA database.
How many toxic release facilities are in Park? ▼
Park, WY has 4 TRI-reporting facilities on record with the EPA Toxic Release Inventory, with a combined total of 1.7K lbs in reported toxic releases. TRI facilities self-report annual chemical release data to the EPA.
What is the air quality in Park? ▼
In 2024, Park, WY recorded a median AQI of 13 and a peak AQI of 88. 91% 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 Park? ▼
Park, WY has 11 EPA-regulated water systems. 4 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 Park? ▼
Environmental compliance in Park, 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