School cafeterias and food service operations serve as a critical nutrition access point for millions of students — particularly the more than 30 million children who participate in federal school meal programs. The water quality used in school food service directly affects the nutritional and chemical safety of meals served to children, a population with heightened PFAS vulnerability. Ensuring PFAS-free water in school kitchens requires both technical solutions and institutional commitment to child health.
Water Use in School Food Service
School cafeteria operations use water at multiple points that affect food quality:
- Cooking water: Pasta, rice, soups, and other items cooked in water incorporate whatever PFAS are in the source water into the food served to students
- Steam cooking: Steamers use water that contacts food surfaces directly — PFAS in steamer water can transfer to steamed vegetables, rice, and other items
- Food washing: Fruits and vegetables are washed before preparation; PFAS in wash water contact food surfaces
- Beverage preparation: Juice reconstituted from concentrate, flavored milk, and other beverages prepared on-site use process water
- Ice for beverages: School ice machines use tap water; PFAS in the water appear in ice served to students in beverages
- Dishwashing and sanitization: Final rinse water contacts food service equipment that subsequently contacts food
Why Schools Need Dedicated Food Service Water Treatment
Many schools have focused PFAS remediation efforts on drinking water fountains and bottle filling stations — rightly so, but incompletely. A student who drinks filtered water at the fountain but eats lunch cooked with unfiltered kitchen water still receives PFAS exposure through the meal. Comprehensive PFAS protection requires filtration of kitchen water in addition to drinking water.
School food service staff — kitchen workers who handle large volumes of process water throughout the day — also have ongoing occupational dermal and potential inhalation exposure to kitchen water, making worker protection another dimension of the issue.
Technical Implementation for School Kitchens
Implementing PFAS filtration in school kitchens involves different challenges than point-of-use drinking water filtration:
High flow rate requirements: Commercial kitchen operations require water flow rates that may exceed point-of-use filter capacities. Point-of-entry filtration for the kitchen area or high-capacity commercial filtration systems sized for kitchen flow demands are typically needed.
Temperature considerations: Hot water lines used in commercial dishwashers operate at temperatures that affect some filter materials; filtration must be specified for both cold and hot water applications or applied only to cold water that is then heated.
Maintenance logistics: School kitchen filter maintenance must be integrated into food service facility management schedules, with clear responsibility assignments for filter change verification.
Funding Sources for School Kitchen PFAS Treatment
Several funding sources can support school kitchen water treatment for PFAS:
- EPA’s Water Infrastructure Improvements for the Nation (WIIN) grants
- State revolving fund programs with school water quality provisions
- USDA’s Child Nutrition Programs can include infrastructure investments in some contexts
- State emergency school water quality programs (several states have established these specifically for PFAS)
- School capital improvement budgets and bond measures
Policy and Advocacy
Parents, school nutrition advocates, and public health professionals can advance school kitchen water quality through:
- Requesting that school boards include kitchen water testing in school facility PFAS assessments
- Advocating for comprehensive PFAS remediation that explicitly includes food service water
- Engaging with state departments of education and health to develop school food service water quality standards
- Connecting school PFAS issues to federal child nutrition program requirements, which already address food safety
Children deserve clean, PFAS-free water in every aspect of their school day — at the fountain, in the classroom, and on their lunch tray.