The risks of contamination of milk and milk products with chemicals are discussed. Residues of pesticides, veterinary preparations and other substances as well as food additives (colors, preservatives, etc.) can lead to adverse health consequences if they are not appropriately applied. Hazardous chemicals, such as toxic metals, dioxins or polychlorinated biphenyls (PCBs) can accidentally enter the food products through environmental contamination of air, water and soil. Chemical risk factors can occur at different points in the food chain. Pollution can occur as a result of the release of chemicals that are part of materials contacting with food.