The Los Angeles County Department of Public Health has released preliminary results from soil testing in and around the Eaton and Palisades fire areas, revealing elevated lead levels in parcels downwind from the Eaton Fire, even on properties with intact homes. These early findings suggest the need for further environmental assessment and increased public awareness of potential health risks.
Lead and Other Chemicals Found in Soil After Fires
According to Public Health, soil samples collected over four weeks between mid-February and mid-March 2025 revealed that several parcels, particularly those downwind from the Eaton Fire, had lead concentrations above health-based screening thresholds. The source of this lead is likely due to the burning of older homes that may have contained lead-based paint, common in houses built before 1979.
The Palisades fire area also showed localized chemical impacts, including heavy metals and polyaromatic hydrocarbons (PAHs), although there is currently no evidence of widespread contamination.
Preliminary, Not Prescriptive: What the Results Mean
Soil sampling and analysis were conducted by Roux Inc., focusing on potential wildfire-related contaminants like PAHs, dioxins, and heavy metals. These tests were performed on parcels with a range of fire impacts—from destroyed to undamaged properties—and then compared against current residential screening thresholds.
While exceeding screening thresholds does not automatically trigger cleanup requirements, it may prompt additional evaluations to determine the scope and source of contamination.
Community Access to Testing and Support Services
In response to possible health risks, free blood lead testing is available to concerned residents through three convenient options:
- Visit a medical provider (covered by most insurance, including Medi-Cal)
- Call 1-800-LA-4-LEAD to schedule an appointment at a Quest Lab
- Attend mobile testing events in the community (walk-ins accepted)
Testing is fast, confidential, free, and especially recommended for children and pregnant individuals, who are most vulnerable to lead exposure.
More Resources for Soil Testing and Evaluation
Residents interested in testing their own soil can consult the following resources:
Academic Institutions
Private Laboratories
- CLS Labs – Rancho Cordova (californialab.com)
- Eurofins Environmental Testing Calscience – Garden Grove
Environmental Consultants
This list is provided for informational purposes only and does not constitute an endorsement by the County.
Precautions and Next Steps
Until further data becomes available, residents—especially those living in or near affected areas—are encouraged to:
- Review soil sampling results posted on the Public Health Post-Fire Assessment page
- Wear appropriate protective gear when handling ash, soot, or fire debris
- Consult an environmental professional for specific property assessments
- Visit ph.lacounty.gov/wildfires or call 1-800-524-5323 for more information
A final report with complete analysis and recommendations is expected in May 2025.