Cities Weigh Synthetic Turf Environmental Tradeoffs

De Anza College in Cupertino is nearing a decision on whether to replace its aging athletic fields with new synthetic turf or switch back to natural grass. (sanjosespotlight.com) The Foothill-De Anza Community College District board of trustees could receive a staff recommendation as early as May 11, according to San José Spotlight. The current turf fields are near the end of their sports lifespan. (sanjosespotlight.com) Synthetic turf is a plastic carpet laid over layers of backing, drainage material and infill that helps the blades stand up. Cupertino city staff said the blades are commonly made from nylon, polypropylene or polyethylene, and the infill can include crumb rubber from ground-up tires. (cupertino.gov) Supporters point to scheduling and upkeep. Skyline College soccer coach Mike Shirabi told San José Spotlight turf is convenient because once it is installed, people “don’t really need to worry about it for a while,” while De Anza soccer coach Rusty Johnson said the surface has worked well for the college’s programs. (sanjosespotlight.com) Opponents are focused on heat, chemicals and disposal. Cupertino’s 2024 memo said staff reviewed concerns including PFAS, microplastic shedding, chemicals in infill, hotter surface temperatures and the lack of recycling infrastructure for worn-out turf. (cupertino.gov) California’s health agency added a new wrinkle on March 5, 2026. The Office of Environmental Health Hazard Assessment said recycled tires used as crumb rubber infill are “not likely to harm users or spectators” and found no evidence of significant cancer risk or other health problems from that material based on available data. (oehha.ca.gov) That finding does not settle the broader local fight. San José Spotlight reported that a 2024 Santa Clara County Medical Association policy recommendation warned synthetic fields may pose environmental and health concerns, especially for children, even as public health agencies said research has not established a clear link between playing on turf fields and increased cancer risk. (sanjosespotlight.com) The De Anza debate is part of a wider South Bay policy push. Sunnyvale says it is studying how artificial turf compares with natural grass on both private and public land, after setting aside $100,000 for research and a consultant. (sunnyvale.ca.gov) Sunnyvale’s schedule calls for focus groups in January 2026, a community meeting in February, commission study sessions in June and a City Council study session on July 28, 2026. (sunnyvale.ca.gov) So the choice in Cupertino is no longer just about one college field. It is also a test case for how South Bay agencies weigh playing time, maintenance budgets, plastic waste and health evidence that is still being argued over. (sanjosespotlight.com) (sunnyvale.ca.gov)