EurEau commissioned a study to assess the potential applicability and relevance of extended producer responsibility (EPR) in order to develop clear policy guidance to address emissions of micropollutants and microplastics from products. The study defines micropollutants as persistent and biologically active substances that are found in water bodies in low concentrations and which can have detrimental effects on humans, the environment and drinking water resources. Secondary microplastics are defined as small plastic parts found in the (aquatic) environment with a diameter of less than 5mm that are formed and released via abrasion or weathering of larger plastic particles, products or debris. The five product categories assessed are pharmaceuticals (human medicinal products), pesticides (plant protection products, biocides (human hygiene/ antibacterial products), textiles (clothing) and tyres. The objective of module 3 is to analyse stakeholder arguments for and against the application of an EU-wide extended producer responsibility (EPR) scheme on products releasing micropollutants and microplastics in the aquatic environment. Based on the arguments against a potential EPR scheme, robust and well-founded counter arguments for EPR have been developed.