This chapter describes the gradual discovery of the presence of chlordecone in different milieus and the associated health issues authors will focus on the question of standards relating to foodstuffs. This visibilization process also made it possible to retrace the history of the authorization and use of chlordecone between 1964 and 1993, a history which summarizes before moving on to the rediscovery of its presence in the environment. It should be added that this distinction between sound and polluted was modified on several occasions, either due to additional contaminated lands being discovered, or because the definition of 'sound' was modified we will look more closely at this in the next section. Whilst AFSSA had based its limits on the specific study of contaminations and consumption in the French West Indies, European Food Safety Agency (EFSA) projected Maximum Residue Limit (MRLs) for the twenty-six European food regimes, which allowed it to model population exposures, and its conclusions were irrefutable.