On 27th June around 0:30 am, smoke was detected in a detergent factory. The fire initiated a bit earlier that night in a building housing the treatment unit for liquid effluent and miscellaneous wastes. Fire-fighters decided not to sprinkle the fire and instead pierced the translucent plastic sheet cladding to better locate the blaze. According to the operator, temperature rose to 55 °C in the building, which was composed of a single-skin cladding (sheet metal and plastic materials). Pallets of waste were evacuated outside the building since they prevented access to an ignited pallet containing scrap pellets for dishwashers (rollers of sodium dichloroisocyanurate (DCCNa)) intended for destruction. The ignited pallet was loaded with makeshift rigid cardboard drums used to store the scrap pellets. These small drums were placed in a plastic container partially filled with water. Since the combustion was not explosive, fire-fighters controlled the blaze in less than an hour, with destruction only extending to 500 kg of scrap pellets. According to the operator, the raw material composing these pellets could not enter into self-combustion. The hypothesis forwarded entailed poorly cleaned drums combined with the presence of incompatible substances on the pallet, as noted during the inspection. The environmental impact (toxic emissions) was limited by the small quantity of substances involved, slow combustion, and the absence of employees in the zone on weekends. The post-accident inspection revealed various problems: a lack of order and storage encumbering circulation corridors in the manufacturing building, external retention basins at full levels, the presence of liquid waste in containers outside of any retention facility, the liquid effluent treatment unit overloaded by diverse waste, the fire water retention tarp containing various solid wastes and greenish-coloured water. The Classified Facilities Inspectorate noted that the container held not only dishwasher pellets, but also corrosive substances (depending on their packaging), wasp protection products, etc. The effluent was thereafter treated by means of thiosulfates, transported in 1 m³ containers for neutralisation prior to discharge into the municipal wastewater network. The condition of underground pipes was verified.