Total Sites
24,720
9 federal databases
Severity Density
0.53
Severity-weighted sites per sq mi
High-Severity Sites
376
Superfund NPL, PFAS detections + similar top-tier records
Data Sources
EPA, USGS
9 databases checked
Source Breakdown
Top Counties in Oklahoma
Oklahoma County carries Oklahoma's densest documented record — 6.85 severity-weighted sites per square mile across 3,643 records, most commonly Underground Storage Tanks, including 31 high-severity sites. Density describes the county's record, not any single parcel.
| County | Sites | Density | Dominant Source |
|---|---|---|---|
| Oklahoma | 3,643 | 6.85 | Underground Storage Tanks |
| Tulsa | 2,771 | 5.96 | Underground Storage Tanks |
| Cleveland | 1,040 | 3.12 | Nitrate |
| Ottawa | 343 | 1.51 | Mining |
| Canadian | 634 | 1.09 | Underground Storage Tanks |
| Kingfisher | 469 | 0.91 | Nitrate |
| Caddo | 658 | 0.91 | Nitrate |
| Pottawatomie | 469 | 0.88 | Underground Storage Tanks |
| Woodward | 590 | 0.82 | Nitrate |
| Major | 415 | 0.81 | Nitrate |
Oklahoma
Sites
4K
Density
6.8
Source
Underground Storage TanksTulsa
Sites
3K
Density
6.0
Source
Underground Storage TanksCleveland
Sites
1K
Density
3.1
Source
NitrateOttawa
Sites
343
Density
1.5
Source
MiningCanadian
Sites
634
Density
1.1
Source
Underground Storage TanksKingfisher
Sites
469
Density
0.9
Source
NitrateCaddo
Sites
658
Density
0.9
Source
NitratePottawatomie
Sites
469
Density
0.9
Source
Underground Storage TanksWoodward
Sites
590
Density
0.8
Source
NitrateMajor
Sites
415
Density
0.8
Source
NitrateAgricultural Pesticide Use in Oklahoma
In the 2019 federal survey estimates, Oklahoma's most-applied agricultural pesticides statewide were Glyphosate, 2,4-D and Acetochlor. 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.
County-Level Detail in Oklahoma
The federal record isn't uniform across a state. Here's what's documented around Oklahoma's counties with the densest records — each read from that county's own sites, not the state average. Proximity is information, not a diagnosis; a soil test settles any near neighbor.
Is It Safe to Grow Food in Oklahoma County?
Federal record: HighWe checked the federal record around Oklahoma County — 3,643 documented sites across 7 of the 9 source types we track, 31 of them high-severity.
The most significant on record: 21 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
Oklahoma County carries one of the heavier federal records we track — 3,643 documented sites, most of them underground storage tanks. That's a record of the area's history, not a verdict on any one yard: proximity to a documented site is information, not a diagnosis. Before food beds go in, a professional soil test tells you exactly what you're working with — and raised beds with clean imported soil grow well almost anywhere in the meantime.
Documented sites nearest the Oklahoma County center
- Elijah Dozier — Underground Storage Tanks · ~0.5 km from the county center
- 12n-02w-04 Cbd 1 — Nitrate · ~1.8 km from the county center
- 12n-02w-04 Cdd 1 — Nitrate · ~2.0 km from the county center
These are the closest documented sites to Oklahoma County's geographic center — a screening reference, not a reading on any specific address. Check your own Oklahoma parcel to see what's actually near you.
Is It Safe to Grow Food in Tulsa County?
Federal record: HighWe checked the federal record around Tulsa County — 2,771 documented sites across 6 of the 9 source types we track, 17 of them high-severity.
The most significant on record: 17 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
Tulsa County carries one of the heavier federal records we track — 2,771 documented sites, most of them underground storage tanks. That's a record of the area's history, not a verdict on any one yard: proximity to a documented site is information, not a diagnosis. Before food beds go in, a professional soil test tells you exactly what you're working with — and raised beds with clean imported soil grow well almost anywhere in the meantime.
Documented sites nearest the Tulsa County center
- Dollar Fifty Cleaners — Brownfields · ~0.1 km from the county center
- Ranch Acres Car Care (Former Texaco) — Underground Storage Tanks · ~0.1 km from the county center
- Mac's Classic Conoco Llc — Underground Storage Tanks · ~0.3 km from the county center
These are the closest documented sites to Tulsa County's geographic center — a screening reference, not a reading on any specific address. Check your own Oklahoma parcel to see what's actually near you.
Check an Address in Oklahoma
Read your Oklahoma parcel
See exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,112 plant recommendations.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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