Ice is often considered an invisible ingredient but if not monitored, it can become a hidden risk in your food safety system.
In Q3 2025, U.S. FDA and Canadian CFIA inspections uncovered Listeria monocytogenes in ice machines used in ready-to-eat (RTE) meat and salad processing plants. These machines were in direct contact with food or food-contact surfaces.
The investigation revealed a lack of sanitation frequency, inadequate design controls, and gaps in environmental monitoring protocols. Despite HACCP plans being in place, these “supporting utilities” were overlooked resulting in multiple product withdrawals and warnings.
What the Incident Highlights
— Sanitation Blind Spots
Cleaning schedules did not cover internal ice-making components or drainage areas where biofilm buildup was detected.
— Lack of Environmental Monitoring at Utility Points
While production surfaces were tested regularly, ice machines though classified as indirect contact were not included in routine swabbing plans.
— Design Issues in Older Equipment
Some of the ice machines had inaccessible internal surfaces and poor drainage design increasing risk of stagnant water and microbial growth.
Audit-Based Reflections on Readiness
✅ Zone Mapping Review – Do your sanitation zones include utility equipment that indirectly touches food?
✅ Utility-Specific Cleaning Schedules – Are there documented procedures for ice makers, water tanks, and compressed air units?
✅ Swabbing Protocols for Ice Contact Points – Is ice treated as a food-grade substance with assigned CCP or PRP responsibilities?
✅ Historical Complaint & Withdrawal Data – Has ice ever been considered a potential contributing factor in quality or safety issues?
Certima’s Mission
As an impartial certification body, Certima assesses compliance with international food safety measures. While Certima does not provide operational guidance, audits serve as a valuable tool for businesses looking to evaluate their fraud prevention strategies and supply chain integrity.
Have you reviewed the sanitation and verification plans for utility equipment recently? Let us know how your team handles ice safety and monitoring in the comments.