Parents want to feel confident that their children are safe while playing on playgrounds. For years, questions have circulated about the potential health risks of recycled tire crumb rubber (a common material used in playground surfacing). Now, new research from the California Office of Environmental Health Hazard Assessment (OEHHA) is providing clear, science-backed reassurance: recycled tire crumb rubber poses no significant health risks to children.

What the Study Found

OEHHA’s comprehensive study tested 35 synthetic turf fields across California, analyzing more than 100 chemicals. Researchers examined realistic exposure scenarios, including skin contact, inhalation, and accidental ingestion. The results showed that any risks of cancer, reproductive harm, developmental issues, or sensory irritation were negligible (even for young children).

“The findings confirm that recycled rubber playground surfaces are a safe, durable choice for everyday fun,” says Sheryl Berkley, Chief Technology Officer at Rubberecycle Corporation, (a leading provider of high-quality rubber surfacing products for playgrounds).

These results align with a 2024 federal study conducted by the U.S. Environmental Protection Agency in collaboration with the Centers for Disease Control and Prevention, the Agency for Toxic Substances and Disease Registry, and the U.S. Consumer Product Safety Commission. That research found no meaningful differences in chemical exposure between children playing on crumb rubber surfaces and those playing on natural grass.

Safe, Durable, and Practical

Beyond safety, recycled rubber offers practical benefits for playgrounds. Its slip-resistant surfaces drain water quickly, helping prevent injuries. The material’s impact-absorbing properties reduce the severity of falls, making it a reliable choice for active play.

“Parents want to know their children are safe when they play, and this rigorous, science‑based OEHHA study offers that reassurance,” Berkley explains.

Environmentally and Economically Responsible

Recycled rubber isn’t just safe; it’s sustainable. Millions of scrap tires are repurposed into playground surfaces, synthetic turf, poured-in-place mats, and even rubber-modified asphalt. This reduces landfill waste, prevents illegal dumping, and supports a circular economy. In addition, these manufacturing and recycling efforts create thousands of jobs nationwide while minimizing carbon footprints.

Backed by Science

The safety of recycled rubber is widely supported by scientific research. According to the Recycled Rubber Coalition’s Better Play Initiative, over 100 peer-reviewed studies have confirmed that recycled rubber is safe for playgrounds and community spaces. The combination of California state research, federal studies, and independent peer-reviewed research provides parents and communities with one of the most comprehensive scientific evaluations available for playground surfacing materials.

For parents, teachers, and community planners, these findings offer reassurance when selecting playground surfaces. 

Final Thoughts

Playgrounds are vital spaces for children’s exercise, creativity, and social interaction. Recycled rubber surfacing provides a safe, durable, and environmentally responsible way to protect kids while they explore and play. With the latest research confirming its safety, parents can confidently encourage outdoor fun (knowing the surfaces beneath their children are scientifically proven to be safe).

For more information, parents and community leaders can view OEHHA’s full report here or visit Rubberecycle Corporation to learn about safe and sustainable playground options.