Total Sites
10,910
9 federal databases
Severity Density
0.18
Severity-weighted sites per sq mi
High-Severity Sites
132
Superfund NPL, PFAS detections + similar top-tier records
Data Sources
EPA, USGS
9 databases checked
Source Breakdown
Top Counties in Wyoming
Laramie County carries Wyoming's densest documented record — 0.57 severity-weighted sites per square mile across 1,007 records, most commonly Underground Storage Tanks, including 18 high-severity sites. Density describes the county's record, not any single parcel.
| County | Sites | Density | Dominant Source |
|---|---|---|---|
| Laramie | 1,007 | 0.57 | Underground Storage Tanks |
| Goshen | 541 | 0.43 | Nitrate |
| Campbell | 748 | 0.24 | Nitrate |
| Big Horn | 446 | 0.24 | Nitrate |
| Uinta | 342 | 0.23 | Underground Storage Tanks |
| Albany | 586 | 0.23 | Nitrate |
| Teton | 531 | 0.22 | Nitrate |
| Sheridan | 372 | 0.21 | Underground Storage Tanks |
| Washakie | 283 | 0.21 | Nitrate |
| Platte | 298 | 0.20 | Underground Storage Tanks |
Laramie
Sites
1K
Density
0.6
Source
Underground Storage TanksGoshen
Sites
541
Density
0.4
Source
NitrateCampbell
Sites
748
Density
0.2
Source
NitrateBig Horn
Sites
446
Density
0.2
Source
NitrateUinta
Sites
342
Density
0.2
Source
Underground Storage TanksAlbany
Sites
586
Density
0.2
Source
NitrateTeton
Sites
531
Density
0.2
Source
NitrateSheridan
Sites
372
Density
0.2
Source
Underground Storage TanksWashakie
Sites
283
Density
0.2
Source
NitratePlatte
Sites
298
Density
0.2
Source
Underground Storage TanksAgricultural Pesticide Use in Wyoming
In the 2019 federal survey estimates, Wyoming's most-applied agricultural pesticides statewide were Glyphosate, 2,4-D and Atrazine. These estimates describe agricultural land use across the state — context for what's in use around the region, not a reading on any garden's soil.
Pesticide data: USGS NAWQA Pesticide National Synthesis Project (EPest county-level use estimates). Latest available county estimates: 2019.
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