This study surveys consumers’ perceptions about unintentional chemical residue in organically produced foods, and reviews the possibility to abolish the procedure of residue tests from which organic producers has been over-sanctioned in Korea. Consumers’ Willingness To Pay was analyzed with a virtual product of egg which made a big scandal of food safety in 2017. The WTP declined as the density of residue was rising up. This means the consumers’ intention to purchase organically produced foods does not depend on the qualitative result of residue detection but on the quantitative density of residue. Organically produced foods where chemical residue is detected at concentration lower than conventionally produced foods are still of value to consumers. Consumers increasingly believe that even if unintentional residues are detected in organic eggs, the certification of the eggs and the chickens in organic production process must be maintained, when they are informed that chemical residues may remain unintentionally. The consumers’ reaction were different from the conventional concept we have believed so far. It is a way to increase the purchase intention of organically produced foods by conveying accurate and objective information to consumers that the probability of chemical residue detection in organically produced foods is even lower than that of conventionally produced foods. The result of this study is expected to contribute to stop the social and institutional practice of depriving producers of opportunities to produce foods organically.