Testing soil safety after wildfires
Protecting Angelenos from dangerous contamination with free rapid-response soil testing. Our Contaminant Level Evaluation and Analysis for Neighborhoods (CLEAN) project is a USC program separate from L.A. Dept. of Public Health soil testing.
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Lead Interpretation Guide
For help understanding your results, recommendations for precautionary measures to reduce your and your family’s risk of exposure, and additional resources, please see our lead interpretation guide
Sampling Guide
Learn how to collect your samples safely.
Hang a flyer!
Spread the word by hanging fliers in your community; free soil testing is available across L.A. County.
Samples Map
This map will be updated regularly as new samples are processed and analyzed.
January 2025 Wildfire Smoke Map
The animation above represents the movement of smoke across the Los Angeles area between January 7 and January 24, 2025. Dark red patches represent extremely smoky conditions (“heavy” smoke) and yellow representing less smoky air (“light” smoke). This is an estimate of the smoke’s behavior—the boundaries between orange and red, for example, should not be interpreted too precisely. The team expects that areas that were covered in red and orange plumes, particularly over consecutive days, may have greater overall exposure to pollution from the fires.
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Push to save trees damaged by the Eaton Fire
Ahead of Olympics, ShadeLA to expand shade across city
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