Lincoln, 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 Lincoln in Wyoming · Population: 20,158
TRI sites such as Pacificorp Naughton Plant; Opal Gas Plant; Pioneer Cryogenic Plant; SDWIS systems such as KEMMERER-DIAMONDVILLE JPB; STAR VALLEY RANCH, TOWN OF; AFTON, BOARD OF PUB UTILITIES anchor Lincoln, WY's EPA extract. Derived burden score 41/100 (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 Lincoln include KEMMERER-DIAMONDVILLE JPB; STAR VALLEY RANCH, TOWN OF; LEISURE VALLEY INC/ STAR VALLEY RV PARK, while Pacificorp Naughton Plant leads reported TRI pounds among local Form R filers. AQS median AQI 31 / peak 77 in 2024.
Burden score 41/100 (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 Lincoln -- 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 Lincoln, WY: EPA TRI 2023 reporting year
Same facilities, both years
+58.9%
3 facilities that filed in 2022 and 2023
Whole inventory
+58.9%
394.6 thousand lb → 626.8 thousand lb, every facility that filed
- Lincoln, WY's total reported releases rose from 394.6 thousand lb in 2022 to 626.8 thousand lb in 2023, based on EPA TRI filings.
- Lincoln, WY's land releases rose from 264.5 thousand lb in 2022 to 478.2 thousand lb in 2023, based on EPA TRI filings.
- Lincoln, WY's air releases rose from 48.9 thousand lb in 2022 to 62.4 thousand lb in 2023, based on EPA TRI filings.
- Lincoln, WY's water releases rose from 857 lb in 2022 to 993 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 | 340 (93%) | 26 | 0 | 77 |
| 2023 | 298 (82%) | 67 | 0 | 97 |
| 2022 | 321 (88%) | 43 | 1 | 118 |
| 2021 | 297 (81%) | 62 | 6 | 126 |
| 2020 | 357 (98%) | 9 | 0 | 71 |
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 (28)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| KEMMERER-DIAMONDVILLE JPB | 3,348 | 35 |
| STAR VALLEY RANCH, TOWN OF | 2,030 | 5 |
| AFTON, BOARD OF PUB UTILITIES | 2,000 | 0 |
| LEISURE VALLEY INC/ STAR VALLEY RV PARK | 1,910 | 6 |
| ALPINE, TOWN OF | 1,300 | 4 |
| BEDFORD WATER & SEWER DISTRICT | 750 | 3 |
| GREATER SMOOT W&S DISTRICT | 720 | 0 |
| COKEVILLE, TOWN OF | 535 | 17 |
| NORDIC RANCHES WATER, LLC. | 465 | 0 |
| THAYNE, TOWN OF | 366 | 0 |
| LA BARGE, TOWN OF | 347 | 5 |
| OSMOND I&S DISTRICT | 315 | 1 |
| FREEDOM W&S DISTRICT | 300 | 0 |
| GROVER WATER & SEWER DISTRICT | 252 | 3 |
| FAIRVIEW WATER & SEWER DISTRICT | 230 | 2 |
| NORTH ALPINE I&S DISTRICT | 200 | 0 |
| ETNA WATER & SEWER DISTRICT | 135 | 1 |
| TOWN OF ALPINE - MEGA WELL | 120 | 0 |
| TRAIL RIDGE WATER SYSTEM | 100 | 0 |
| TURNERVILLE WATER AND SEWER DISTRICT | 90 | 2 |
| STAR VIEW ESTATES | 84 | 0 |
| WESTVIEW VILLAGE | 83 | 1 |
| STAR VALLEY TRAILER COURT | 72 | 0 |
| OPAL, TOWN OF | 65 | 0 |
| KENNINGTON SPRINGS PIPELINE | 45 | 4 |
| OAKLEY WATER, LLC | 39 | 0 |
| CEDAR SPRINGS MEADOWS | 19 | 1 |
| NORTH FORTY SUBDIVISION | 15 | 1 |
TRI Facilities (3)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Pacificorp Naughton Plant | 2.4M lbs |
| 2 | Opal Gas Plant | 213.0K lbs |
| 3 | Pioneer Cryogenic Plant | 5.6K lbs |
Cities in Lincoln (14)
Frequently Asked Questions
What is the environmental risk level in Lincoln, Wyoming? ▼
Are there Superfund sites in Lincoln? ▼
How many toxic release facilities are in Lincoln? ▼
What is the air quality in Lincoln? ▼
Is the drinking water safe in Lincoln? ▼
What environmental agencies cover Lincoln? ▼
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.