Authors’ response on Perkins et al. (2021) “Dead in the water: comment on “Development of an aquatic exposure assessment model for imidacloprid in sewage treatment plant discharges arising from use of veterinary medicinal products”

Environmental Sciences Europe

Table 1 Default values used according to the BPR

Parameter	Nomenclature	Value	References
Number of households connected to the same STP	N_houses	4000	[4]
Effluent discharge rate for a STP	EFFLUENT_STP	2,000,000 L/d	[3]
Dilution factor from the STP effluent into the adjacent receiving river water	DILUTION	10	[3]