Within the context of Anthropocene, food sustainability has become a major topic together with the preservation of water and soil resources and biodiversity. All around the world, the model of agriculture is mainly based on the use of pesticides that threaten soil and aquatic ecosystems and consequently drinking water quality. In addition, pesticides and their transformation products can have adverse effects on biota and possibly on human health. With the constant development of new molecules, their degradation residues still represent a major threat to natural ecosystems, water resources and human health to be tackled. In the absence of a European and national soil protection Directive, to complete monitoring tasks, a posteriori on site pesticide residues innovative mitigation approaches are of interest and might be implemented. These are all opportunities to be seized to develop sustainable agriculture and guarantee the quality of the environment. Bioaugmentation to restore pesticides-contaminated soils on site -via the inoculation of polluted environments with degrading-microorganisms- is very promising as it is a cost effective and not perturbing (i.e. no excavation required) green technology. However, to deploy this approach on the market, several scientific and technological barriers are still to be lifted: (i) the improvement of pesticide-degrading inoculants delivery into soil, mainly in terms of viability and biomass, (ii) the selection of the good inoculant expressing the desired pesticide-degrading activity once in soil and allowing the complete pesticides biodegradation, and (iii) the evaluation of possible side effects of bioaugmentation on both abiotic and biotic soil properties. The EPURSOL project tackles scientific and technological challenges relative to the use of bioaugmentation in cropped arable soils to reduce pesticides concentrations in soil. For this, a cutting-edge bioaugmentation approach based on the formulation of biocomposites is foreseen, taking into account its potential impacts on the biotic and abiotic properties of the receiving soil. EPURSOL relies on a proof of concept using a microbial biofilm-based approach as a way for delivering microorganisms to soil. The project will be conducted with model topical active substances and selected pesticide-degrading microbial consortia grown as biofilms on formulated carrier materials to form biocomposites. One of the major novelties is to operate chemical or physical modifications at the surface of carrier materials to deliver nutrient sources and/or favour biofilm attachment, growth, stability and activity. To ensure a complete biodegradation of pesticides in soil, EPURSOL experiments will be carried out with pure microorganisms and microbial consortia harbouring the pesticide-degrading pathways. By developing a lab-to-field experimental design (lysimeters, mesocosms), EPURSOL will not only evaluate the harmlessness, stability and efficiency of the process developed, but also assess its possible non-intentional effects on soil abiotic (texture, structure, water holding capacity…) and biotic (microbial diversity, C and N microbial functions) properties by monitoring the installation of the inoculant in the indigenous soil microbiota and its ecotoxicological impact. The technical trajectories (carrier material, strains…) and the industrial-scale process for biocomposite production and storage will be made in collaboration with end-users for field scale applications. EPURSOL will be conducted thanks to the association of public and private partners and stakeholders with complementary skills in microbial ecology and ecotoxicology, materials science, biogeosciences, agriculture and biotechnology. This project, in addition to providing an innovative approach to clean agricultural soils from pesticide residues, will revisit and improve the classical bioaugmentation strategy, and provide a breakthrough to implement this technology to Green Deal AgTech.