The Tire Industry Association (TIA) has welcomed the findings of a major study by the California Office of Environmental Health Hazard Assessment (OEHHA), which concludes that crumb rubber infill used in synthetic turf fields is unlikely to pose health risks to users.

The comprehensive assessment found no evidence of significant cancer risk or other health concerns, including for young athletes, based on currently available data. The findings align with a broader body of research that has consistently indicated crumb rubber is safe for use in sports fields.

TIA CEO Dick Gust described the results as a strong validation of industry knowledge, expressing hope that the study will help resolve ongoing concerns and support wider adoption of recycled tire materials in community infrastructure.

Synthetic turf fields, increasingly used across the United States, are designed to replicate natural grass while requiring less water and maintenance. Many systems rely on crumb rubber infill—granulated material derived from recycled tires—to improve surface performance by stabilising the fibres, enhancing traction, and providing impact cushioning for athletes.

To evaluate safety, OEHHA analysed 35 synthetic turf fields across California, including installations of varying ages and from different climate zones. The study assessed more than 100 potential chemical substances and examined multiple exposure pathways, including skin contact, inhalation, and incidental ingestion. It also incorporated behavioural data from over 1,000 soccer players aged 7 to 71, as well as exposure scenarios involving young children.

The conclusion was clear: no acute health risks were identified for athletes, coaches, referees, spectators, or children using these surfaces.

Beyond health considerations, the use of crumb rubber in synthetic turf represents a significant end-market for recycled tires, helping divert end-of-life tires from landfill and supporting circular economy objectives. TIA emphasised that such applications play a critical role in building sustainable material flows within the tire recycling sector.

The association is encouraging policymakers, communities, and sports organisations to consider the findings alongside the broader scientific consensus when evaluating the use of crumb rubber in synthetic turf systems.

Article source: Traction News.