Researchers have known since at least 2008 that wildfires can create chromium-6, but a new study, published in the journal Environmental Science and Technology in November, is the first to report details such as how long it might persist in groundwater.
"What surprised me is we are still seeing so many visits to emergency departments associated with very common household cleaning products," Lara McKenzie, Ph.D., stated, emphasizing the ongoing issue despite safety advancements.
Environmental monitoring has traditionally relied on snapshots of exposure from a water sample collected on a single day, a blood sample drawn at one point in time, or soil tested from a specific location. But exposure unfolds gradually as people move through different environments and come into contact with air, dust, and surfaces throughout the day.
We want an end to the use of herbicides in our creeks. This idea that we're just going to spray, hose down these creeks and leave them dead is unacceptable. Linas and other residents have filed requests for records detailing the chemicals the county uses to control vegetation in the waterways, such as glyphosate, triclopyr and imazapyr.
The patchwork efforts to identify and safely remove contamination left by the 2025 Eaton and Palisades fires has been akin to the Wild West. Experts have given conflicting guidance on best practices. Shortly after the fires, the federal government suddenly refused to adhere to California's decades-old post-fire soil-testing policy; California later considered following suit. Meanwhile, insurance companies have resisted remediation practices widely recommended by scientists for still-standing homes.
Never place batteries of any type in your curbside recycling bin. Batteries can damage recycling equipment and, if lithium batteries are mixed in, cause fires. Always use designated battery collection programs.