Total Sites
10,103
9 federal databases
Severity Density
0.44
Severity-weighted sites per sq mi
High-Severity Sites
308
Superfund NPL, PFAS detections + similar top-tier records
Data Sources
EPA, USGS
9 databases checked
Source Breakdown
Top Counties in Maine
Cumberland County carries Maine's densest documented record — 2.77 severity-weighted sites per square mile across 1,771 records, most commonly Underground Storage Tanks, including 24 high-severity sites. Density describes the county's record, not any single parcel.
| County | Sites | Density | Dominant Source |
|---|---|---|---|
| Cumberland | 1,771 | 2.77 | Underground Storage Tanks |
| Androscoggin | 668 | 1.89 | Underground Storage Tanks |
| York | 1,005 | 1.40 | Underground Storage Tanks |
| Kennebec | 868 | 1.33 | Underground Storage Tanks |
| Knox | 292 | 1.08 | Underground Storage Tanks |
| Sagadahoc | 184 | 1.01 | Underground Storage Tanks |
| Hancock | 625 | 0.67 | Underground Storage Tanks |
| Lincoln | 197 | 0.52 | Underground Storage Tanks |
| Oxford | 703 | 0.51 | Underground Storage Tanks |
| Waldo | 246 | 0.45 | Underground Storage Tanks |
Cumberland
Sites
2K
Density
2.8
Source
Underground Storage TanksAndroscoggin
Sites
668
Density
1.9
Source
Underground Storage TanksYork
Sites
1K
Density
1.4
Source
Underground Storage TanksKennebec
Sites
868
Density
1.3
Source
Underground Storage TanksKnox
Sites
292
Density
1.1
Source
Underground Storage TanksSagadahoc
Sites
184
Density
1.0
Source
Underground Storage TanksHancock
Sites
625
Density
0.7
Source
Underground Storage TanksLincoln
Sites
197
Density
0.5
Source
Underground Storage TanksOxford
Sites
703
Density
0.5
Source
Underground Storage TanksWaldo
Sites
246
Density
0.5
Source
Underground Storage TanksAgricultural Pesticide Use in Maine
In the 2019 federal survey estimates, Maine's most-applied agricultural pesticides statewide were Metolachlor & Metolachlor-S, Metolachlor-S and Glyphosate. 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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