Occurrence of per- and polyfluoroalkyl substances (PFAS) in the Philippine groundwater using a risk-based approachRodelma Perez, Maria Christine Latosa, Patrick Salarda, Prima Joy Margarito, Rochelle Retamar and Denvert PangayaoE3S Web Conf., 712 (2026) 01005DOI: https://doi.org/10.1051/e3sconf/202671201005