Division 3.4.1.2 Additives for aquatic animals

Feed additives used in aquaculture can result in contamination of sediment and water. The compartment of concern for the environmental risk assessment for fish farmed in cages is assumed to be the sediment. For fish farmed in land-based systems the effluent flowing to surface water is considered to pose the major environmental risk.

The worst case PEC for sediment (PEC_sediment) would arise considering all excreted compounds being deposited in the sediment. If the PEC_sediment (default: 20 cm depth) is less than 10 μg/kg wet weight, then no further assessment is required.

If the PEC in the surface water (PEC_sw) is less than 0,1 μg/l, no further assessment is required.