Chemical contaminants presence in food is unintentional and undesirable.
Examples of chemical contaminants include the following:
- heavy metals - lead and mercury
- organic pollutants - dioxins
- acrylamide which may result from food being processed
Chemical contaminants can enter the food chain from multiple sources. Contamination can occur during primary production from various environmental sources including:
- waste from factories
- contaminated land, including from natural occurrence
- contaminated water, for example, dioxins, halogenated organic compounds or heavy metals
- plant diseases - mycotoxins
- contamination from weeds, for example, plant toxins
- carry over of certain substances from animal feed
- climatic conditions, for example, wet conditions at key stages during growing and harvest can increase production of mycotoxins
Chemical contaminants can also enter the food chain at the secondary production stage
- during cooking and processing, for example, acrylamide, polycyclic aromatic hydrocarbons)
- storage, for example, mycotoxins
- transportation and handling
- time, temperature and humidity
Chemical contaminants may be harmful to health at certain levels. It is necessary to manage their levels in food and reduce exposure to consumers. Several measures are in place to manage the risk from these contaminants and reduce the levels at which they are present in food - including good practices and regulatory controls.
Among risk management measures, regulatory controls play a key role. Regulation 178/2002 lays down the general principles and requirements of food law as well as procedures in matters of food safety.
Food safety requirements are stipulated in Article 14 which states that food shall not be placed on the market if it is unsafe and food shall be deemed unsafe if it is considered as the following:
- injurious to health
- unfit for human consumption
The principles can be summarised into three points:
- food containing contaminant to an amount unacceptable from the public health viewpoint, shall not be placed on the market
- contaminant levels shall be kept as low as can reasonably be achieved following recommended good working practices
- maximum levels can be set for certain contaminants to protect public health. It is the responsibility of Food Business Operators (FBOs) to ensure due diligence measures are in place and documented in Hazard Analysis and Critical Control Point (HACCP) or food safety management systems. This is done to manage the risk from chemical contaminants in food.
Specific maximum levels (MLs) for certain contaminants in food are laid down in Commission Regulation (EC) No 1881/2006 - as amended. The complete legislation contains an exhaustive list.
Additional Regulatory measures or related measures have been established. This includes:
- recommendations for data collection or to investigate exceedances of performance indicators
- codes of good practice to be followed in agriculture and food manufacture
- regulations requiring specific activity under the scope of the Hygiene Regulation (EC) 852/2004
- guidance levels for trade purposes
Responsibility of food business operators
It is the responsibility of the FBO to ensure food is safe and compliant with the legislation.
To do this the FBO must have suitable food safety management processes and HACCP in place to manage the risk from chemical contaminants in food. It is also the FBO’s responsibility to ensure due diligence measures are in place and documented in their food safety management systems/HACCP proportionate to risk and means.
Food Contaminants Update Bulletins
Regular updates on key events in the mycotoxins area are included in the Food Contaminants Update Bulletins. These are produced to enable more meaningful consultation and obtain early stakeholder input on EU and associated domestic legislation. Updates are aimed to keep stakeholders informed of the latest changes as well as building up the history behind the featured policy development.