Total Sites
27,834
9 federal databases
Severity Density
0.76
Severity-weighted sites per sq mi
High-Severity Sites
554
Superfund NPL, PFAS detections + similar top-tier records
Data Sources
EPA, USGS
9 databases checked
Source Breakdown
Top Counties in Alabama
Jefferson County carries Alabama's densest documented record — 3.79 severity-weighted sites per square mile across 3,134 records, most commonly Underground Storage Tanks, including 57 high-severity sites. Density describes the county's record, not any single parcel.
| County | Sites | Density | Dominant Source |
|---|---|---|---|
| Jefferson | 3,134 | 3.79 | Underground Storage Tanks |
| Montgomery | 1,385 | 2.62 | Underground Storage Tanks |
| Mobile | 2,265 | 2.48 | Underground Storage Tanks |
| Madison | 1,295 | 2.25 | Underground Storage Tanks |
| Calhoun | 730 | 1.78 | Underground Storage Tanks |
| Morgan | 725 | 1.71 | Underground Storage Tanks |
| Etowah | 608 | 1.56 | Underground Storage Tanks |
| Marshall | 605 | 1.43 | Underground Storage Tanks |
| Houston | 573 | 1.32 | Underground Storage Tanks |
| Colbert | 498 | 1.21 | Underground Storage Tanks |
Jefferson
Sites
3K
Density
3.8
Source
Underground Storage TanksMontgomery
Sites
1K
Density
2.6
Source
Underground Storage TanksMobile
Sites
2K
Density
2.5
Source
Underground Storage TanksMadison
Sites
1K
Density
2.3
Source
Underground Storage TanksCalhoun
Sites
730
Density
1.8
Source
Underground Storage TanksMorgan
Sites
725
Density
1.7
Source
Underground Storage TanksEtowah
Sites
608
Density
1.6
Source
Underground Storage TanksMarshall
Sites
605
Density
1.4
Source
Underground Storage TanksHouston
Sites
573
Density
1.3
Source
Underground Storage TanksColbert
Sites
498
Density
1.2
Source
Underground Storage TanksAgricultural Pesticide Use in Alabama
In the 2019 federal survey estimates, Alabama's most-applied agricultural pesticides statewide were Glyphosate, 2,4-D and Metolachlor & Metolachlor-S. 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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