Total Sites
17,478
9 federal databases
Severity Density
0.37
Severity-weighted sites per sq mi
High-Severity Sites
2,567
Superfund NPL, PFAS detections + similar top-tier records
Data Sources
EPA, USGS
9 databases checked
Source Breakdown
Top Counties in Utah
Salt Lake County carries Utah's densest documented record — 10.16 severity-weighted sites per square mile across 4,926 records, most commonly Underground Storage Tanks, including 447 high-severity sites. Density describes the county's record, not any single parcel.
| County | Sites | Density | Dominant Source |
|---|---|---|---|
| Salt Lake | 4,926 | 10.16 | Underground Storage Tanks |
| Davis | 877 | 3.86 | Underground Storage Tanks |
| Weber | 869 | 1.94 | Underground Storage Tanks |
| Utah | 1,711 | 1.46 | Underground Storage Tanks |
| Cache | 530 | 0.70 | Underground Storage Tanks |
| Beaver | 602 | 0.54 | Mining |
| Wasatch | 313 | 0.53 | Nitrate |
| Juab | 704 | 0.50 | Mining |
| Washington | 670 | 0.49 | Nitrate |
| Summit | 375 | 0.41 | Underground Storage Tanks |
Salt Lake
Sites
5K
Density
10.2
Source
Underground Storage TanksDavis
Sites
877
Density
3.9
Source
Underground Storage TanksWeber
Sites
869
Density
1.9
Source
Underground Storage TanksUtah
Sites
2K
Density
1.5
Source
Underground Storage TanksCache
Sites
530
Density
0.7
Source
Underground Storage TanksBeaver
Sites
602
Density
0.5
Source
MiningWasatch
Sites
313
Density
0.5
Source
NitrateJuab
Sites
704
Density
0.5
Source
MiningWashington
Sites
670
Density
0.5
Source
NitrateSummit
Sites
375
Density
0.4
Source
Underground Storage TanksAgricultural Pesticide Use in Utah
In the 2019 federal survey estimates, Utah's most-applied agricultural pesticides statewide were Glyphosate, 2,4-D and Chlorpyrifos. 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 Utah
The federal record isn't uniform across a state. Here's what's documented around Utah'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 Salt Lake County?
Federal record: HighWe checked the federal record around Salt Lake County — 4,926 documented sites across 8 of the 9 source types we track, 447 of them high-severity.
The most significant on record: 70 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
Salt Lake County carries one of the heavier federal records we track — 4,926 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 Salt Lake County center
- (C- 2- 1)11bad- 1 — Nitrate · ~0.4 km from the county center
- 48th Street Market — Underground Storage Tanks · ~0.5 km from the county center
- (C- 2- 1) 2dcb- 1 — Nitrate · ~0.5 km from the county center
These are the closest documented sites to Salt Lake County's geographic center — a screening reference, not a reading on any specific address. Check your own Utah parcel to see what's actually near you.
Check an Address in Utah
Read your Utah 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.
25+ data sources analyzed in seconds