Pollution from PFASs in water and sediment of Liaodong Bay basin was investigated.
PFBS had the highest concentration in water at the site near an industrial park.
PFOA and PFOcDA were the most abundant PFASs in sediment.
There are significant point-source contributors to PFAS pollution in this basin.
Mass loading of PFASs flowing into Liaodong Bay was estimated to be 506 kg/year.