PFAS enter the food processing sector through two principal pathways: migration from PFAS-treated food contact materials (FCM) into process water and food products, and direct contamination of water supplies used in food production operations. As both FCM regulations and drinking water standards for PFAS tighten globally, food and beverage manufacturers face growing pressure to characterize and mitigate PFAS contamination across their water management systems.
PFAS Migration from Food Contact Materials
Grease-resistant food packaging—including microwave popcorn bags, fast food wrappers, pizza boxes, and molded fiber containers—has historically relied on PFAS-based coatings to prevent oil migration. These coatings release PFAS into food and, when packaging comes into contact with water during production or cleaning, into process water streams. Fluoropolymer-coated cookware, conveyor belts, and processing equipment surfaces are additional sources of PFAS in food facility process water, particularly at high operating temperatures where fluoropolymer surface integrity degrades.
Studies measuring PFAS in food plant process water have found detectable PFAS in rinsate from packaging material washing, conveyor belt cleaning solutions, and boiler makeup water at facilities using PFAS-containing scale inhibitor formulations. While concentrations are typically in the low-ppt range, cumulative exposure via daily food consumption may be significant relative to toxicological reference values, particularly for short-chain PFAS that are not effectively cleared by the human body.
Regulatory Trends and Industry Response
The EU’s 2020 PFAS restriction on food contact materials—banning C8 and longer-chain PFAS in paper and board FCM—has driven rapid reformulation by packaging suppliers and created demand for validated fluorine-free barrier coatings. The FDA has accepted voluntary phase-out commitments from major paper coating manufacturers for short-chain PFAS in FCM, though legacy inventories in the supply chain complicate transition timelines. Several U.S. states including California, Washington, and Maine have enacted bans on PFAS in food packaging effective 2023-2025.
Food processors should conduct PFAS risk assessments across their water-contact process streams, including water supply characterization, process water recycling streams, and cleaning-in-place (CIP) system effluents. Facilities using surface water or groundwater from PFAS-affected watersheds face particular exposure risks and should assess whether current water treatment—typically filtration and disinfection—provides meaningful PFAS removal. Point-of-use RO or IX treatment for critical process water applications may be necessary where source water PFAS concentrations are elevated.