Perimeter Solutions
NYSE: PRM38Laggard· ProvisionalPerimeter Solutions is the world's largest producer of aerial wildfire fire retardants, including the industry-standard PHOS-CHEK brand supplied to the US Forest Service and CAL FIRE for long-term wildfire suppression.
Why it's on ClimateTicker
Perimeter Solutions sits on a climate platform because wildfire suppression is an adaptation service in a world where climate change is lengthening fire seasons and doubling acreage burned; its PHOS-CHEK products protect lives, property, and forests. However, the company's core value proposition is tied to worsening climate conditions rather than reducing their cause, its flagship product carries unresolved ecological toxicity concerns (heavy metals, aquatic harm), and its own operational decarbonisation disclosures remain early-stage and self-reported, with no SBTi or CDP validation found.
Commitments & Certifications
Controversy & Greenwashing Watch
PHOS-CHEK's full ingredient list remains undisclosed as a trade secret, hampering independent environmental and health assessment; California regulators and researchers are calling for greater transparency as drops on residential neighborhoods surge.source ↗
A peer-reviewed USC study found that PHOS-CHEK LC-95W contains chromium, arsenic, lead, and other toxic metals at concentrations 4–2,880 times above EPA drinking water limits, raising ecological and human health concerns.source ↗
Perimeter Solutions declined to respond to a media request for comment from The New Lede regarding the USC heavy-metals study, raising concerns about corporate accountability and transparency.source ↗
Research documents that PHOS-CHEK is lethal to rainbow trout, Chinook salmon, and other aquatic species upon waterway contact; the U.S. Forest Service has previously been successfully sued over retardant drops near water, and accidental misapplications continue to occur.source ↗
Perimeter is a defendant in MDL proceedings with over 6,000 cases alleging groundwater and drinking water contamination from PFAS chemicals in AFFF firefighting foam, stemming from its 2019 acquisition of The Solberg Company.source ↗
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