Campbell, 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. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.
Environmental data for Campbell in Wyoming · Population: 47,018
TRI sites such as Black Hills Corp - Neil Simpson Complex; Basin Electric Dry Fork Station; Pacificorp Wyodak Plant; SDWIS systems such as GILLETTE, CITY OF; WRIGHT WATER & SEWER DISTRICT; COUNTRYSIDE WATER USERS, INC. anchor Campbell, WY's EPA extract. Derived burden score 46/100 (Moderate 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 Campbell include COUNTRYSIDE WATER USERS, INC.; WRANGLER ESTATES; LAKEVIEW MOBILE HOME PARK, while Black Hills Corp - Neil Simpson Complex leads reported TRI pounds among local Form R filers. AQS median AQI 44 / peak 161 in 2024.
Burden score 46/100 (Moderate 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 Campbell -- 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 Campbell, WY: EPA TRI 2023 reporting year
Same facilities, both years
-21.2%
7 facilities that filed in 2022 and 2023
Whole inventory
-18.7%
4.8 million lb → 3.9 million lb, every facility that filed
Between the two reporting years, 1 facility filed for the first time and 0 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Campbell, WY's total reported releases fell from 4.8 million lb in 2022 to 3.8 million lb in 2023, based on EPA TRI filings.
- Campbell, WY's off-site transfers fell from 1.6 million lb in 2022 to 888.5 thousand lb in 2023, based on EPA TRI filings.
- Campbell, WY's air releases rose from 197.1 thousand lb in 2022 to 220.1 thousand lb in 2023, based on EPA TRI filings.
- Campbell, WY's land releases fell from 3.0 million lb in 2022 to 2.7 million lb in 2023, based on EPA TRI filings.
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 | 232 (63%) | 129 | 3 | 161 |
| 2023 | 245 (67%) | 113 | 6 | 177 |
| 2022 | 210 (58%) | 146 | 7 | 584 |
| 2021 | 218 (60%) | 131 | 16 | 143 |
| 2020 | 247 (67%) | 116 | 3 | 124 |
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 (7)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| GILLETTE, CITY OF | 32,222 | 0 |
| WRIGHT WATER & SEWER DISTRICT | 3,207 | 0 |
| COUNTRYSIDE WATER USERS, INC. | 360 | 2 |
| WRANGLER ESTATES | 250 | 4 |
| STROUP TRAILER COURT | 74 | 0 |
| LAKEVIEW MOBILE HOME PARK | 36 | 2 |
| HAGENS ESTATES | 29 | 0 |
TRI Facilities (9)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Black Hills Corp - Neil Simpson Complex | 8.7M lbs |
| 2 | Basin Electric Dry Fork Station | 5.4M lbs |
| 3 | Pacificorp Wyodak Plant | 4.0M lbs |
| 4 | Western Gas Resources Hilight Gas Plant | 993.2K lbs |
| 5 | 50 Buttes | 118.5K lbs |
| 6 | Joy Global Gillette Wy | 765 lbs |
| 7 | Nelson Brothers Mining Services LLC | 417 lbs |
| 8 | Buckskin Mining Co Gillette Wy | 44 lbs |
| 9 | Austin Powder Mining LLC | 0 lbs |
Cities in Campbell (2)
Frequently Asked Questions
What is the environmental risk level in Campbell, Wyoming? ▼
Are there Superfund sites in Campbell? ▼
How many toxic release facilities are in Campbell? ▼
What is the air quality in Campbell? ▼
Is the drinking water safe in Campbell? ▼
What environmental agencies cover Campbell? ▼
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.