original: ensuring that the food supply is free of contamination .
simplifications: this ensures that the food supply is free of contamination . ensuring that the food supply is free from contamination . making sure that the food supply is not contaminated make sure that the food supply is free of pollution . make sure that the food supply is clean . making sure that the food supply is free of contamination . numerous food safety organisations and bodies are ensuring that the food supply is free of contamination . this helps to ensure that the food supply is free of contamination